{ "spec_version": "3", "endpoint": "decisions", "stock_code": "3402", "company_name": "東レ", "content_lang": "ja", "meta_lang": "en", "canonical_url": "https://the-shashi.com/tse/3402/", "api_url": "/api/3402/decisions.json", "updated": "2026-08-05", "license": "© 2026 Yutaka Sugiura. All rights reserved.", "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/3402/", "count": 10, "description": "Index of this company's management decisions. One decision = one endpoint: follow api_url for the full dossier (background, the decision itself, outcome, quoted primary sources and references).", "decisions": [ { "slug": "founding-toyo-rayon-1926", "url": "/tse/3402/decisions/founding-toyo-rayon-1926/", "api_url": "/api/3402/decisions/founding-toyo-rayon-1926.json", "year": 1926, "month": 1, "type": "founding", "tags": [ "st-tech", "st-capex", "pf-diversify-related" ], "title": "三井物産による人絹事業への出資と、「三井」を冠さない東洋レーヨンの設立", "subtitle": "商社が初めての製造事業に踏み出すとき、本家の名を貸すか、外すか——大正末の人絹をめぐる設計", "status": "implemented", "status_label": "実施" }, { "slug": "dupont-nylon-alliance-1951", "url": "/tse/3402/decisions/dupont-nylon-alliance-1951/", "api_url": "/api/3402/decisions/dupont-nylon-alliance-1951.json", "year": 1951, "month": null, "type": "alliance", "tags": [ "st-tech", "bm-core-shift" ], "title": "米デュポンとのナイロン技術提携", "subtitle": "資本金の1.5倍を投じて特許を買った社運の決断は、いかにして自前技術の源流となったか", "status": "implemented", "status_label": "実施" }, { "slug": "polyester-ici-alliance-1957", "url": "/tse/3402/decisions/polyester-ici-alliance-1957/", "api_url": "/api/3402/decisions/polyester-ici-alliance-1957.json", "year": 1957, "month": 2, "type": "alliance", "tags": [ "st-tech", "bm-core-shift", "st-brand" ], "title": "英ICIからのポリエステル繊維技術の導入と、帝国人造絹絲との共同導入", "subtitle": "独占を捨てて競合と組んだのはなぜか——ライセンス料も商標も分け合った技術提携", "status": "implemented", "status_label": "実施" }, { "slug": "thailand-production-1963", "url": "/tse/3402/decisions/thailand-production-1963/", "api_url": "/api/3402/decisions/thailand-production-1963.json", "year": 1963, "month": 3, "type": "overseas", "tags": [ "gl-entry", "gl-expansion" ], "title": "タイでの合弁2社の設立と、海外現地生産の開始", "subtitle": "大口輸出先が輸入代替へ動くとき、輸出で守るか現地で作るか——1963年の合繊進出第1号", "status": "implemented", "status_label": "実施" }, { "slug": "carbon-fiber-commercialization-1971", "url": "/tse/3402/decisions/carbon-fiber-commercialization-1971/", "api_url": "/api/3402/decisions/carbon-fiber-commercialization-1971.json", "year": 1971, "month": 8, "type": "new_business", "tags": [ "st-tech", "pf-diversify-related" ], "title": "炭素繊維「トレカ」の事業化と、黒字化まで約40年におよぶ赤字事業の継続", "subtitle": "買い手が釣り竿とゴルフシャフトしかない素材を、なぜ５人の社長が畳まずに引き継いだのか", "status": "implemented", "status_label": "実施" }, { "slug": "fiber-commitment-1975", "url": "/tse/3402/decisions/fiber-commitment-1975/", "api_url": "/api/3402/decisions/fiber-commitment-1975.json", "year": 1975, "month": 9, "type": "transformation", "tags": [ "pf-focus" ], "title": "藤吉次英社長による「脱繊維」の否定と繊維への残留", "subtitle": "脱繊維こそ合理とされた繊維不況期に、藤吉次英氏はなぜ繊維に留まると決めたのか", "status": "implemented", "status_label": "実施" }, { "slug": "maeda-reform-1987", "url": "/tse/3402/decisions/maeda-reform-1987/", "api_url": "/api/3402/decisions/maeda-reform-1987.json", "year": 1987, "month": null, "type": "transformation", "tags": [ "tr-turnaround", "pf-focus" ], "title": "前田勝之助氏が「大企業病」を自己診断した経営改革", "subtitle": "かつて「三井の星」と呼ばれた優等生は、自社の「大企業病」をどう名指し、風土をどう変えたか", "status": "implemented", "status_label": "実施" }, { "slug": "uniqlo-heattech-partnership-2006", "url": "/tse/3402/decisions/uniqlo-heattech-partnership-2006/", "api_url": "/api/3402/decisions/uniqlo-heattech-partnership-2006.json", "year": 2006, "month": 3, "type": "alliance", "tags": [ "st-tech", "st-brand" ], "title": "ファーストリテイリングとの戦略的パートナーシップとヒートテックの共同開発", "subtitle": "繊維を斜陽とみた各社が非繊維へ移るなか、東レはなぜ繊維に残り、ユニクロと組んだのか", "status": "implemented", "status_label": "実施" }, { "slug": "zoltek-acquisition-2014", "url": "/tse/3402/decisions/zoltek-acquisition-2014/", "api_url": "/api/3402/decisions/zoltek-acquisition-2014.json", "year": 2014, "month": null, "type": "acquisition", "tags": [ "ma-crossborder-out", "pf-diversify-related" ], "title": "米ゾルテックの買収による産業用炭素繊維への参入", "subtitle": "技術自前主義を転換した初の大型買収は、風力発電向けの需要をどう読み違えたか", "status": "implemented", "status_label": "実施" }, { "slug": "advanced-composites-acquisition-2018", "url": "/tse/3402/decisions/advanced-composites-acquisition-2018/", "api_url": "/api/3402/decisions/advanced-composites-acquisition-2018.json", "year": 2018, "month": 3, "type": "acquisition", "tags": [ "ma-crossborder-out" ], "title": "蘭テンカーテ・アドバンスト・コンポジットの買収による熱可塑性複合材料への参入", "subtitle": "炭素繊維の世界首位が過去最大の1230億円を投じたのは、なぜ売上270億円の小さな会社だったのか", "status": "implemented", "status_label": "実施" } ], "by_type": [ { "key": "acquisition", "count": 2, "url": "/api/3402/decisions/by-type/acquisition.json" }, { "key": "alliance", "count": 3, "url": "/api/3402/decisions/by-type/alliance.json" }, { "key": "founding", "count": 1, "url": "/api/3402/decisions/by-type/founding.json" }, { "key": "new_business", "count": 1, "url": "/api/3402/decisions/by-type/new_business.json" }, { "key": "overseas", "count": 1, "url": "/api/3402/decisions/by-type/overseas.json" }, { "key": "transformation", "count": 2, "url": "/api/3402/decisions/by-type/transformation.json" } ], "by_decade": [ { "key": "1920s", "count": 1, "url": "/api/3402/decisions/by-decade/1920s.json" }, { "key": "1950s", "count": 2, "url": "/api/3402/decisions/by-decade/1950s.json" }, { "key": "1960s", "count": 1, "url": "/api/3402/decisions/by-decade/1960s.json" }, { "key": "1970s", "count": 2, "url": "/api/3402/decisions/by-decade/1970s.json" }, { "key": "1980s", "count": 1, "url": "/api/3402/decisions/by-decade/1980s.json" }, { "key": "2000s", "count": 1, "url": "/api/3402/decisions/by-decade/2000s.json" }, { "key": "2010s", "count": 2, "url": "/api/3402/decisions/by-decade/2010s.json" } ] }