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class="firstHeading mw-first-heading"><span class="mw-page-title-main">Okuma Corporation</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. 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mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%A7%D9%88%DA%A9%D9%88%D9%85%D8%A7" title="اوکوما – South Azerbaijani" lang="azb" hreflang="azb" data-title="اوکوما" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Okuma" title="Okuma – Danish" lang="da" hreflang="da" data-title="Okuma" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/%C5%8Ckuma_(Unternehmen)" title="Ōkuma (Unternehmen) – German" lang="de" hreflang="de" data-title="Ōkuma (Unternehmen)" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-fa 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data-mw-deduplicate="TemplateStyles:r1242257876">.mw-parser-output .ib-company .infobox-label{padding-right:0.5em}.mw-parser-output .ib-company .infobox-data,.mw-parser-output .ib-company .infobox-below{line-height:1.35em}.mw-parser-output .ib-company-logo img{background-color:#f8f9fa}.mw-parser-output .ib-company-locality,.mw-parser-output .ib-company-country{display:inline}</style><table class="infobox ib-company vcard"><caption class="infobox-title fn org">Okuma Corporation</caption><tbody><tr><td colspan="2" class="infobox-image ib-company-logo logo"><span typeof="mw:File"><a href="/wiki/File:Okuma_Corporation_company_logo.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/Okuma_Corporation_company_logo.svg/260px-Okuma_Corporation_company_logo.svg.png" decoding="async" width="260" height="62" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/Okuma_Corporation_company_logo.svg/390px-Okuma_Corporation_company_logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/11/Okuma_Corporation_company_logo.svg/520px-Okuma_Corporation_company_logo.svg.png 2x" data-file-width="826" data-file-height="196" /></a></span></td></tr><tr><td colspan="2" class="infobox-image ib-company-logo logo"><span typeof="mw:File"><a href="/wiki/File:Ds1_okuma.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Ds1_okuma.jpg/260px-Ds1_okuma.jpg" decoding="async" width="260" height="186" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Ds1_okuma.jpg/390px-Ds1_okuma.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Ds1_okuma.jpg/520px-Ds1_okuma.jpg 2x" data-file-width="1102" data-file-height="787" /></a></span></td></tr><tr><th scope="row" class="infobox-label"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Native name</div></th><td class="infobox-data"><span title="Japanese-language text"><span lang="ja">オークマ株式会社</span></span></td></tr><tr><th scope="row" class="infobox-label">Company type</th><td class="infobox-data category"><a href="/wiki/Public_Company" class="mw-redirect" title="Public Company">Public</a> (<a href="/wiki/Kabushiki_gaisha" title="Kabushiki gaisha">K.K</a>)</td></tr><tr><th scope="row" class="infobox-label"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Ticker_symbol" title="Ticker symbol">Traded as</a></div></th><td class="infobox-data"><a href="/wiki/Tokyo_Stock_Exchange" title="Tokyo Stock Exchange">TYO</a>: <a rel="nofollow" class="external text" href="https://www2.jpx.co.jp/tseHpFront/StockSearch.do?callJorEFlg=1&method=topsearch&topSearchStr=6103">6103</a></td></tr><tr><th scope="row" class="infobox-label">Industry</th><td class="infobox-data category"><a href="/wiki/Machinery" class="mw-redirect" title="Machinery">Machinery</a></td></tr><tr><th scope="row" class="infobox-label">Founded</th><td class="infobox-data"><a href="/wiki/Nagoya" title="Nagoya">Nagoya</a> (January 1898<span class="noprint">; 126 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">1898-01</span>)</span>)</td></tr><tr><th scope="row" class="infobox-label">Founder</th><td class="infobox-data agent">Eiichi Okuma</td></tr><tr><th scope="row" class="infobox-label">Headquarters</th><td class="infobox-data label"><a href="/wiki/%C5%8Cguchi,_Aichi" class="mw-redirect" title="Ōguchi, Aichi">Ōguchi, Aichi</a> 480–0193, Japan</td></tr><tr><th scope="row" class="infobox-label"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Area served</div></th><td class="infobox-data">Worldwide</td></tr><tr><th scope="row" class="infobox-label"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Key people</div></th><td class="infobox-data agent">Atsushi Ieki<br /><small>(<a href="/wiki/President_(corporate_title)" title="President (corporate title)">president</a>)</small></td></tr><tr><th scope="row" class="infobox-label">Products</th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><a href="/wiki/Lathes" class="mw-redirect" title="Lathes">Lathes</a></li><li>Machining centers</li><li>Multitasking machines</li><li><a href="/wiki/Grinding_(abrasive_cutting)" title="Grinding (abrasive cutting)">Grinders</a></li><li>CNC controls</li><li><a href="/wiki/Automation" title="Automation">Factory automation products</a></li></ul></div></td></tr><tr><th scope="row" class="infobox-label">Revenue</th><td class="infobox-data"><span typeof="mw:File"><span title="Increase"><img alt="Increase" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Increase2.svg/11px-Increase2.svg.png" decoding="async" width="11" height="11" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Increase2.svg/17px-Increase2.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Increase2.svg/22px-Increase2.svg.png 2x" data-file-width="300" data-file-height="300" /></span></span> <a href="/wiki/US_dollar" class="mw-redirect" title="US dollar">US$</a> 1.305 billion (<a href="/wiki/Fiscal_year" title="Fiscal year">FY</a> 2013) (<a href="/wiki/Japanese_yen" title="Japanese yen">JPY</a> 134.35 billion) (FY 2013)</td></tr><tr><th scope="row" class="infobox-label"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;"><a href="/wiki/Net_income" title="Net income">Net income</a></div></th><td class="infobox-data"><span typeof="mw:File"><span title="Increase"><img alt="Increase" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Increase2.svg/11px-Increase2.svg.png" decoding="async" width="11" height="11" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Increase2.svg/17px-Increase2.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Increase2.svg/22px-Increase2.svg.png 2x" data-file-width="300" data-file-height="300" /></span></span> US$ 77.22 million (FY 2013) (JPY 7.94 billion) (FY 2013)</td></tr><tr><th scope="row" class="infobox-label"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Number of employees</div></th><td class="infobox-data">3,812 (consolidated, as of March 2020)</td></tr><tr><th scope="row" class="infobox-label">Website</th><td class="infobox-data"><span class="official-website"><span class="url"><a rel="nofollow" class="external text" href="http://www.okuma.co.jp/english/">Official website</a></span></span></td></tr><tr><td colspan="2" class="infobox-below"><b>Footnotes / references</b><br /><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr></tbody></table> <p><b>Okuma Corporation</b><span style="font-weight: normal"> (<span title="Japanese-language text"><span lang="ja">オークマ株式会社</span></span>, <span title="Hepburn transliteration"><i lang="ja-Latn">Ōkuma Kabushiki-gaisha</i></span>)</span> is a <a href="/wiki/Machine_tool_builder" title="Machine tool builder">machine tool builder</a> based in <a href="/wiki/%C5%8Cguchi" title="Ōguchi">Ōguchi</a>, <a href="/wiki/Aichi_Prefecture" title="Aichi Prefecture">Aichi Prefecture</a>, <a href="/wiki/Japan" title="Japan">Japan</a>. It has global market share in <a href="/wiki/Numerical_control" title="Numerical control">CNC machine tools</a> such as CNC <a href="/wiki/Metal_lathe" title="Metal lathe">lathes</a>, <a href="/wiki/Milling_(machining)" title="Milling (machining)">machining centers</a>, and turn-mill machining centers. The company also offers FA (factory automation) products and <a href="/wiki/Servomotor" title="Servomotor">servomotors</a>.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>It is listed on the <a href="/wiki/Tokyo_Stock_Exchange" title="Tokyo Stock Exchange">Tokyo Stock Exchange</a> and is a component of the <a href="/wiki/Nikkei_225" title="Nikkei 225">Nikkei 225</a> <a href="/wiki/Stock_index" class="mw-redirect" title="Stock index">stock index</a>.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Okuma_Corporation&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-Expand_section plainlinks metadata ambox mbox-small-left ambox-content" role="presentation"><tbody><tr><td class="mbox-image"><span typeof="mw:File"><a href="/wiki/File:Wiki_letter_w_cropped.svg" class="mw-file-description"><img alt="[icon]" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1c/Wiki_letter_w_cropped.svg/20px-Wiki_letter_w_cropped.svg.png" decoding="async" width="20" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1c/Wiki_letter_w_cropped.svg/30px-Wiki_letter_w_cropped.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1c/Wiki_letter_w_cropped.svg/40px-Wiki_letter_w_cropped.svg.png 2x" data-file-width="44" data-file-height="31" /></a></span></td><td class="mbox-text"><div class="mbox-text-span">This section <b>needs expansion</b>. You can help by <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Okuma_Corporation&action=edit&section=">adding to it</a>. <span class="date-container"><i>(<span class="date">April 2013</span>)</i></span></div></td></tr></tbody></table> <p>The company was founded in 1898, as the <b>Okuma Noodle Machine Co.</b>, to manufacture and sell noodle-making machines. Eiichi Okuma, the founder of the original company, was working on how to make <a href="/wiki/Udon" title="Udon">udon</a> more effectively. He was using lathe to make "sticks", that has an important role in cutting the udon noodle. But the lathes used in those days in Japan were of poor precision. This was one of big reasons which convinced Okuma to start making machine tools.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> In 1918 Eiichi established <b>Okuma Machinery Works Ltd.</b> and started selling the OS lathe. </p><p>Okuma is a machine tool builder with a history of more than 100 years. <a href="/wiki/Lathe" title="Lathe">Lathes</a> were the main product category in the early days of company. The line now includes many CNC <a href="/wiki/Machine_tool" title="Machine tool">machine tools</a>, including lathes, machining centers (mills), multitasking (turn-mill) machines, and grinding machines. Okuma's Double-Column Machining Center has a large market share in Japan. </p> <div class="mw-heading mw-heading2"><h2 id="Technological_development">Technological development</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Okuma_Corporation&action=edit&section=2" title="Edit section: Technological development"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Okuma_MULTUS_U3000_multi-tasking_machine_with_automatic_tool_changer_2.jpg" class="mw-file-description"><img alt="An Okuma MULTUS U3000 multi-tasking machine with automatic tool changer at Lampin Corporation in the Blackstone Valley of Massachusetts." src="//upload.wikimedia.org/wikipedia/commons/thumb/5/53/Okuma_MULTUS_U3000_multi-tasking_machine_with_automatic_tool_changer_2.jpg/300px-Okuma_MULTUS_U3000_multi-tasking_machine_with_automatic_tool_changer_2.jpg" decoding="async" width="300" height="225" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/53/Okuma_MULTUS_U3000_multi-tasking_machine_with_automatic_tool_changer_2.jpg/450px-Okuma_MULTUS_U3000_multi-tasking_machine_with_automatic_tool_changer_2.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/53/Okuma_MULTUS_U3000_multi-tasking_machine_with_automatic_tool_changer_2.jpg/600px-Okuma_MULTUS_U3000_multi-tasking_machine_with_automatic_tool_changer_2.jpg 2x" data-file-width="4096" data-file-height="3072" /></a><figcaption>An Okuma MULTUS U3000 multi-tasking machine with automatic tool changer at <a href="/wiki/Lampin_Corporation" title="Lampin Corporation">Lampin Corporation</a> in the <a href="/wiki/Blackstone_Valley" title="Blackstone Valley">Blackstone Valley</a> of <a href="/wiki/Massachusetts" title="Massachusetts">Massachusetts</a>.</figcaption></figure> <p>Most machine tool builders source their CNC controls from partners such as <a href="/wiki/Fanuc" class="mw-redirect" title="Fanuc">Fanuc</a>, <a href="/wiki/Mitsubishi_Electric" title="Mitsubishi Electric">Mitsubishi Electric</a>, <a href="/wiki/Siemens" title="Siemens">Siemens</a>, and <a href="/wiki/Heidenhain" title="Heidenhain">Heidenhain</a>. Several builders have developed their own CNC controls over the years (including <a href="/wiki/Yamazaki_Mazak_Corporation" title="Yamazaki Mazak Corporation">Mazak</a>, Okuma, <a href="/wiki/Haas_Automation" title="Haas Automation">Haas</a>, Dalian Kede and others), but Okuma is unusual among machine tool builders for the degree to which it designs and builds all of its own hardware, software, and machine components. This is the company's "Single Source" philosophy. </p><p>Okuma's CNC control is called the "OSP" series. It offers <a href="/wiki/Control_theory" title="Control theory">closed-loop positioning</a> via its absolute position feedback system. The "OSP" name began as an abbreviation for "Okuma Sampling Pathcontrol". </p><p>In an industry that pushes hard for continual technological innovation, Okuma has often been an innovative leader.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (January 2021)">citation needed</span></a></i>]</sup> For example, it has been among the leaders of development for thermal compensation and collision avoidance.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (January 2021)">citation needed</span></a></i>]</sup> Thermal compensation is designing the machine elements and control to minimize the dimensional distortion that results from the heat generated by machining. This is done both by preventing heat buildup (for example, flowing coolant through machine elements formerly not cooled) and by detecting and compensating for temperature rises when they occur (for example, monitoring temperature with a sensor and using the sensor's output signal as input to the control logic). Collision avoidance is designing the machine to predict and prevent interference, for example, having the machine "know" the form and location of all fixturing so that it can foresee a crash and stop its own movement before crashing. Recent innovation includes technology to avoid <a href="/wiki/Machining_vibrations" title="Machining vibrations">chatter</a>, both by predicting and preventing it and by early automatic detection and correction (via dynamic changes of <a href="/wiki/Speeds_and_feeds" title="Speeds and feeds">speeds and feeds</a>) when it does occur. </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Okuma_Corporation&action=edit&section=3" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20150712073259/http://www.okuma.co.jp/english/outline/">"Corporate Profile"</a>. Okuma Corporation. Archived from <a rel="nofollow" class="external text" href="http://www.okuma.co.jp/english/outline/">the original</a> on July 12, 2015<span class="reference-accessdate">. Retrieved <span class="nowrap">March 26,</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Corporate+Profile&rft.pub=Okuma+Corporation&rft_id=http%3A%2F%2Fwww.okuma.co.jp%2Fenglish%2Foutline%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOkuma+Corporation" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.bloomberg.com/research/stocks/snapshot/snapshot.asp?ticker=6103:JP">"Company Snapshot"</a>. <a href="/wiki/Bloomberg_Businessweek" title="Bloomberg Businessweek">Bloomberg Businessweek</a><span class="reference-accessdate">. Retrieved <span class="nowrap">March 26,</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Company+Snapshot&rft.pub=Bloomberg+Businessweek&rft_id=https%3A%2F%2Fwww.bloomberg.com%2Fresearch%2Fstocks%2Fsnapshot%2Fsnapshot.asp%3Fticker%3D6103%3AJP&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOkuma+Corporation" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://indexes.nikkei.co.jp/en/nkave/index/component?idx=nk225#21">"Components:Nikkei Stock Average"</a>. <a href="/wiki/Nikkei_Inc." class="mw-redirect" title="Nikkei Inc.">Nikkei Inc.</a><span class="reference-accessdate"> Retrieved <span class="nowrap">March 26,</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Components%3ANikkei+Stock+Average&rft.pub=Nikkei+Inc.&rft_id=http%3A%2F%2Findexes.nikkei.co.jp%2Fen%2Fnkave%2Findex%2Fcomponent%3Fidx%3Dnk225%2321&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOkuma+Corporation" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFChristian_BerggrenMasami_Nomura1997" class="citation book cs1">Christian Berggren; Masami Nomura (1997). <i>The Resilience of Corporate Japan: New Competitive Strategies and Personnel Practices</i>. <a href="/wiki/SAGE_Publications" class="mw-redirect" title="SAGE Publications">SAGE Publications</a>. p. 151. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-85396-309-4" title="Special:BookSources/978-1-85396-309-4"><bdi>978-1-85396-309-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Resilience+of+Corporate+Japan%3A+New+Competitive+Strategies+and+Personnel+Practices&rft.pages=151&rft.pub=SAGE+Publications&rft.date=1997&rft.isbn=978-1-85396-309-4&rft.au=Christian+Berggren&rft.au=Masami+Nomura&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOkuma+Corporation" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Okuma_Corporation&action=edit&section=4" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239009302">.mw-parser-output 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title="Template talk:Nikkei 225"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Nikkei_225" title="Special:EditPage/Template:Nikkei 225"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="23x15px&#124;border_&#124;alt=&#124;link=_Nikkei_225_companies_of_Japan" style="font-size:114%;margin:0 4em"><span class="flagicon"><span class="mw-image-border" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/9e/Flag_of_Japan.svg/23px-Flag_of_Japan.svg.png" decoding="async" width="23" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/9e/Flag_of_Japan.svg/35px-Flag_of_Japan.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/9e/Flag_of_Japan.svg/45px-Flag_of_Japan.svg.png 2x" data-file-width="900" data-file-height="600" /></span></span></span> <a href="/wiki/Nikkei_225" title="Nikkei 225">Nikkei 225</a> companies of <a href="/wiki/Japan" title="Japan">Japan</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Seven_%26_i_Holdings" class="mw-redirect" title="Seven & i Holdings">7&i</a></li> <li><a href="/wiki/Advantest" title="Advantest">Advantest</a></li> <li><a href="/wiki/AEON_(company)" class="mw-redirect" title="AEON (company)">ÆON</a></li> <li><a href="/wiki/AGC_Inc." title="AGC Inc.">AGC</a></li> <li><a href="/wiki/Ajinomoto" title="Ajinomoto">Ajinomoto</a></li> <li><a href="/wiki/Alps_Electric" title="Alps Electric">Alps</a></li> <li><a href="/wiki/All_Nippon_Airways" title="All Nippon Airways">ANA</a></li> <li><a href="/wiki/Amada_Co" class="mw-redirect" title="Amada Co">Amada</a></li> <li><a href="/wiki/Aozora_Bank" title="Aozora Bank">Aozora Bank</a></li> <li><a href="/wiki/Asahi_Breweries" title="Asahi Breweries">Asahi Breweries</a></li> <li><a href="/wiki/Asahi_Kasei" title="Asahi Kasei">Asahi Kasei</a></li> <li><a href="/wiki/Astellas_Pharma" title="Astellas Pharma">Astellas</a></li> <li><a href="/wiki/Bandai_Namco_Holdings" title="Bandai Namco Holdings">Bandai Namco Holdings</a></li> <li><a href="/wiki/Bridgestone" title="Bridgestone">Bridgestone</a></li> <li><a href="/wiki/Canon_Inc." title="Canon Inc.">Canon</a></li> <li><a href="/wiki/Casio" title="Casio">Casio</a></li> <li><a href="/wiki/Chiba_Bank" title="Chiba Bank">Chiba Bank</a></li> <li><a href="/wiki/Chiyoda_Corporation" title="Chiyoda Corporation">Chiyoda</a></li> <li><a href="/wiki/Chubu_Electric_Power" title="Chubu Electric Power">Chuden</a></li> <li><a href="/wiki/Chugai_Pharmaceutical_Co." title="Chugai Pharmaceutical Co.">Chugai</a></li> <li><a href="/wiki/Citizen_Watch" title="Citizen Watch">Citizen Holdings</a></li> <li><a href="/wiki/Comsys" title="Comsys">Comsys</a></li> <li><a href="/wiki/Bank_of_Yokohama" title="Bank of Yokohama">Concordia Financial</a></li> <li><a href="/wiki/Credit_Saison" title="Credit Saison">Credit Saison</a></li> <li><a href="/wiki/Dai-ichi_Life" title="Dai-ichi Life">Dai-ichi Life</a></li> <li><a href="/wiki/Daiichi_Sankyo" title="Daiichi Sankyo">Daiichi Sankyo</a></li> <li><a href="/wiki/Daikin" title="Daikin">Daikin</a></li> <li><a href="/wiki/Daiwa_House" title="Daiwa House">Daiwa House</a></li> <li><a href="/wiki/Daiwa_Securities_Group" title="Daiwa Securities Group">Daiwa Securities</a></li> <li><a href="/wiki/Denki_Kagaku_Kogyo" class="mw-redirect" title="Denki Kagaku Kogyo">Denka</a></li> <li><a href="/wiki/Denso" title="Denso">Denso</a></li> <li><a href="/wiki/Dentsu" title="Dentsu">Dentsu</a></li> <li><a href="/wiki/Dai_Nippon_Printing" title="Dai Nippon Printing">DNP</a></li> <li><a href="/wiki/Dowa_Holdings" title="Dowa Holdings">Dowa</a></li> <li><a href="/wiki/Ebara_Corporation" title="Ebara Corporation">Ebara</a></li> <li><a href="/wiki/Eisai_(company)" title="Eisai (company)">Eisai</a></li> <li><a href="/wiki/Eneos_Holdings" title="Eneos Holdings">ENEOS</a></li> <li><a href="/wiki/FANUC" title="FANUC">Fanuc</a></li> <li><a href="/wiki/Fast_Retailing" title="Fast Retailing">Fast Retailing</a></li> <li><a href="/wiki/Fuji_Electric" title="Fuji Electric">Fuji Electric</a></li> <li><a href="/wiki/Fujifilm" title="Fujifilm">Fujifilm</a></li> <li><a href="/wiki/Fujikura" title="Fujikura">Fujikura</a></li> <li><a href="/wiki/Fujitsu" title="Fujitsu">Fujitsu</a></li> <li><a href="/wiki/Fukuoka_Financial_Group" title="Fukuoka Financial Group">Fukuoka Financial</a></li> <li><a href="/wiki/Furukawa_Group" title="Furukawa Group">Furukawa Group</a></li> <li><a href="/wiki/Furukawa_Electric" title="Furukawa Electric">Furukawa Electric</a></li> <li><a href="/wiki/GS_Yuasa" title="GS Yuasa">GS Yuasa</a></li> <li><a href="/wiki/Heiwa_Real_Estate" title="Heiwa Real Estate">Heiwa Real Estate</a></li> <li><a href="/wiki/Hino_Motors" title="Hino Motors">Hino</a></li> <li><a href="/wiki/Hitachi" title="Hitachi">Hitachi</a></li> <li><a href="/wiki/Hitachi_Construction_Machinery" title="Hitachi Construction Machinery">Hitachi Construction Machinery</a></li> <li><a href="/wiki/Hitachi_Zosen_Corporation" title="Hitachi Zosen Corporation">Hitz</a></li> <li><a href="/wiki/Hokuetsu_Paper_Mills" class="mw-redirect" title="Hokuetsu Paper Mills">Hokuetsu Paper</a></li> <li><a href="/wiki/Honda" title="Honda">Honda</a></li> <li><a href="/wiki/IHI_Corporation" title="IHI Corporation">IHI</a></li> <li><a href="/wiki/Inpex" title="Inpex">INPEX</a></li> <li><a href="/wiki/Isetan_Mitsukoshi_Holdings" title="Isetan Mitsukoshi Holdings">Isetan-Mitsukoshi</a></li> <li><a href="/wiki/Isuzu" title="Isuzu">Isuzu</a></li> <li><a href="/wiki/Itochu" title="Itochu">Itochu</a></li> <li><a href="/wiki/JFE_Holdings" title="JFE Holdings">JFE</a></li> <li><a href="/wiki/J._Front_Retailing" title="J. Front Retailing">J. Front Retailing</a></li> <li><a href="/wiki/JGC_Corporation" class="mw-redirect" title="JGC Corporation">JGC</a></li> <li><a href="/wiki/Central_Japan_Railway_Company" title="Central Japan Railway Company">JR Central</a></li> <li><a href="/wiki/East_Japan_Railway_Company" title="East Japan Railway Company">JR East</a></li> <li><a href="/wiki/West_Japan_Railway_Company" title="West Japan Railway Company">JR West</a></li> <li><a href="/wiki/Japan_Steel_Works" title="Japan Steel Works">JSW</a></li> <li><a href="/wiki/Japan_Tobacco" title="Japan Tobacco">JT</a></li> <li><a href="/wiki/JTEKT" title="JTEKT">JTEKT</a></li> <li><a href="/wiki/Kajima" title="Kajima">Kajima</a></li> <li><a href="/wiki/Kansai_Electric_Power_Company" title="Kansai Electric Power Company">KEPCO</a></li> <li><a href="/wiki/Kao_Corporation" title="Kao Corporation">Kao</a></li> <li><a href="/wiki/Kawasaki_Heavy_Industries" title="Kawasaki Heavy Industries">Kawasaki</a></li> <li><a href="/wiki/KDDI" title="KDDI">KDDI</a></li> <li><a href="/wiki/Keio_Corporation" title="Keio Corporation">Keio</a></li> <li><a href="/wiki/Keisei_Electric_Railway" title="Keisei Electric Railway">Keisei</a></li> <li><a href="/wiki/Keyence" title="Keyence">Keyence</a></li> <li><a href="/wiki/Kikkoman" title="Kikkoman">Kikkoman</a></li> <li><a href="/wiki/Kirin_Company" title="Kirin Company">Kirin</a></li> <li><a href="/wiki/K_Line" title="K Line">K Line</a></li> <li><a href="/wiki/Kobe_Steel" title="Kobe Steel">Kobelco</a></li> <li><a href="/wiki/Komatsu_Limited" title="Komatsu Limited">Komatsu</a></li> <li><a href="/wiki/Konami" title="Konami">Konami</a></li> <li><a href="/wiki/Konica_Minolta" title="Konica Minolta">Konica Minolta</a></li> <li><a href="/wiki/Kubota" title="Kubota">Kubota</a></li> <li><a href="/wiki/Kuraray" title="Kuraray">Kuraray</a></li> <li><a href="/wiki/Kyocera" title="Kyocera">Kyocera</a></li> <li><a href="/wiki/Kyowa_Hakko_Kirin" class="mw-redirect" title="Kyowa Hakko Kirin">Kyowa Hakko Kirin</a></li> <li><a href="/wiki/Marubeni" title="Marubeni">Marubeni</a></li> <li><a href="/wiki/Maruha_Nichiro" title="Maruha Nichiro">Maruha Nichiro</a></li> <li><a href="/wiki/Marui" title="Marui">Marui</a></li> <li><a href="/wiki/Matsui_Securities" title="Matsui Securities">Matsui Securities</a></li> <li><a href="/wiki/Mazda" title="Mazda">Mazda</a></li> <li><a href="/wiki/Meidensha" title="Meidensha">Meidensha</a></li> <li><a href="/wiki/Meiji_Holdings" title="Meiji Holdings">Meiji Holdings</a></li> <li><a href="/wiki/Mitsui_Engineering_%26_Shipbuilding" title="Mitsui Engineering & Shipbuilding">MES</a></li> <li><a href="/wiki/Minebea" class="mw-redirect" title="Minebea">Minebea</a></li> <li><a href="/wiki/Mitsubishi_Chemical_Holdings" class="mw-redirect" title="Mitsubishi Chemical Holdings">Mitsubishi Chemical</a></li> <li><a href="/wiki/Mitsubishi_Corporation" title="Mitsubishi Corporation">Mitsubishi Corporation</a></li> <li><a href="/wiki/Mitsubishi_Electric" title="Mitsubishi Electric">Mitsubishi Electric</a></li> <li><a href="/wiki/Mitsubishi_Estate" title="Mitsubishi Estate">Mitsubishi Estate</a></li> <li><a href="/wiki/Mitsubishi_Heavy_Industries" title="Mitsubishi Heavy Industries">Mitsubishi Heavy Industries</a></li> <li><a href="/wiki/Mitsubishi_Logistics" title="Mitsubishi Logistics">Mitsubishi Logistics</a></li> <li><a href="/wiki/Mitsubishi_Materials" title="Mitsubishi Materials">Mitsubishi Materials</a></li> <li><a href="/wiki/Mitsubishi_Motors" title="Mitsubishi Motors">Mitsubishi Motors</a></li> <li><a href="/wiki/Mitsui_%26_Co" class="mw-redirect" title="Mitsui & Co">Mitsui & Co</a></li> <li><a href="/wiki/Mitsui_Chemicals" title="Mitsui Chemicals">Mitsui Chemicals</a></li> <li><a href="/wiki/Mitsui_Fudosan" title="Mitsui Fudosan">Mitsui Fudosan</a></li> <li><a href="/wiki/Mitsui" title="Mitsui">Mitsui Kinzoku</a></li> <li><a href="/wiki/Mitsumi_Electric" title="Mitsumi Electric">Mitsumi Electric</a></li> <li><a href="/wiki/Mizuho_Financial_Group" title="Mizuho Financial Group">Mizuho</a></li> <li><a href="/wiki/Mitsui_O.S.K._Lines" title="Mitsui O.S.K. Lines">MOL</a></li> <li><a href="/wiki/MS%26AD_Insurance_Group" title="MS&AD Insurance Group">MS&AD</a></li> <li><a href="/wiki/Mitsubishi_UFJ_Financial_Group" title="Mitsubishi UFJ Financial Group">MUFG</a></li> <li><a href="/wiki/Murata_Manufacturing" title="Murata Manufacturing">Murata Manufacturing</a></li> <li><a href="/wiki/NEC" title="NEC">NEC</a></li> <li><a href="/wiki/Nexon" title="Nexon">Nexon</a></li> <li><a href="/wiki/Nippon_Electric_Glass" title="Nippon Electric Glass">NEG</a></li> <li><a href="/wiki/NGK_Insulators" title="NGK Insulators">NGK</a></li> <li><a href="/wiki/Nichirei" title="Nichirei">Nichirei</a></li> <li><a href="/wiki/Nikon" title="Nikon">Nikon</a></li> <li><a href="/wiki/Nintendo" title="Nintendo">Nintendo</a></li> <li><a href="/wiki/Nippon_Express" title="Nippon Express">Nippon Express</a></li> <li><a href="/wiki/Nippon_Kayaku" title="Nippon Kayaku">Nippon Kayaku</a></li> <li><a href="/wiki/Nippon_Light_Metal" title="Nippon Light Metal">Nippon Light Metal</a></li> <li><a href="/wiki/Nippon_Ham" title="Nippon Ham">Nippon Ham</a></li> <li><a href="/wiki/Nippon_Paper_Industries" title="Nippon Paper Industries">Nippon Paper Industries</a></li> <li><a href="/wiki/Nippon_Soda" title="Nippon Soda">Nippon Soda</a></li> <li><a href="/wiki/Nissan" title="Nissan">Nissan Motor Company</a></li> <li><a href="/wiki/Nissan_Chemical_Corporation" title="Nissan Chemical Corporation">Nissan Chemical</a></li> <li><a href="/wiki/Nisshin_Seifun_Group" title="Nisshin Seifun Group">Nisshin Seifun</a></li> <li><a href="/wiki/Nisshin_Steel" class="mw-redirect" title="Nisshin Steel">Nisshin Steel</a></li> <li><a href="/wiki/Nissui" title="Nissui">Nissui</a></li> <li><a href="/wiki/Nitto_Boseki" title="Nitto Boseki">Nittobo</a></li> <li><a href="/wiki/Nitto_Denko" title="Nitto Denko">Nitto Denko</a></li> <li><a href="/wiki/Sompo_Japan_Nipponkoa_Holdings" class="mw-redirect" title="Sompo Japan Nipponkoa Holdings">Sompo Japan Nipponkoa Holdings</a></li> <li><a href="/wiki/Nomura_Holdings" title="Nomura Holdings">Nomura</a></li> <li><a href="/wiki/Nippon_Sheet_Glass" title="Nippon Sheet Glass">NSG</a></li> <li><a href="/wiki/NSK_Ltd." title="NSK Ltd.">NSK</a></li> <li><a href="/wiki/Nippon_Steel" title="Nippon Steel">NSSMC</a></li> <li><a href="/wiki/NTN_Corporation" title="NTN Corporation">NTN</a></li> <li><a href="/wiki/Nippon_Telegraph_and_Telephone" title="Nippon Telegraph and Telephone">NTT</a></li> <li><a href="/wiki/NTT_Data" title="NTT Data">NTT Data</a></li> <li><a href="/wiki/Nippon_Yusen" title="Nippon Yusen">NYK</a></li> <li><a href="/wiki/Obayashi_Corporation" title="Obayashi Corporation">Obayashi</a></li> <li><a href="/wiki/Odakyu_Electric_Railway" title="Odakyu Electric Railway">Odakyu</a></li> <li><a href="/wiki/Oji_Paper_Company" title="Oji Paper Company">Oji Holdings Corporation</a></li> <li><a href="/wiki/OKI_(company)" class="mw-redirect" title="OKI (company)">OKI</a></li> <li><a class="mw-selflink selflink">Okuma</a></li> 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