{
  "spec_version": "3",
  "endpoint": "timeline",
  "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/timeline.json",
  "updated": "2026-09-04",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/3402/",
  "source": {
    "primary": [
      "有価証券報告書",
      "週刊東洋経済 2012年4月12日号"
    ],
    "extraction": "有価証券報告書の沿革を基礎に、社史・報道で補完",
    "row_field": "source"
  },
  "timeline": [
    {
      "date": "1926/1",
      "importance": 3,
      "event": "東洋レーヨンを設立",
      "source": null,
      "link": "/tse/3402/decisions/founding-toyo-rayon-1926/"
    },
    {
      "date": "1931",
      "importance": 1,
      "event": "レーヨンで国内シェア確保",
      "source": null
    },
    {
      "date": "1938/2",
      "importance": 1,
      "event": "瀬田工場を新設",
      "source": null
    },
    {
      "date": "1941/7",
      "importance": 1,
      "event": "国内3社を合併",
      "source": "有価証券報告書"
    },
    {
      "date": "1949/5",
      "importance": 1,
      "event": "東京証券取引所に株式上場",
      "source": null
    },
    {
      "date": "1951/6",
      "importance": 3,
      "event": "デュポンとナイロンの業務提携契約を締結",
      "source": null,
      "link": "/tse/3402/decisions/dupont-nylon-alliance-1951/"
    },
    {
      "date": "1957",
      "importance": 3,
      "event": "ICI社ポリエステルに関する業務提携契約を締結",
      "source": null,
      "link": "/tse/3402/decisions/polyester-ici-alliance-1957/"
    },
    {
      "date": "1958/4",
      "importance": 2,
      "event": "三島工場が竣工、ポリエステル繊維「テトロン」生産開始",
      "source": "有価証券報告書"
    },
    {
      "date": "1959/4",
      "importance": 1,
      "event": "ポリエステルフィルム「ルミラー」本格生産開始",
      "source": "有価証券報告書"
    },
    {
      "date": "1961/4",
      "importance": 1,
      "event": "PNC法でプロラクタムの生産開始",
      "source": null
    },
    {
      "date": "1962/9",
      "importance": 1,
      "event": "基礎研究所を新設",
      "source": null
    },
    {
      "date": "1963/3",
      "importance": 3,
      "event": "タイにThai Toray Textile Mills社を設立し海外生産を開始",
      "source": null,
      "link": "/tse/3402/decisions/thailand-production-1963/"
    },
    {
      "date": "1970/1",
      "importance": 1,
      "event": "商号を東レに変更",
      "source": null
    },
    {
      "date": "1970/1",
      "importance": 1,
      "event": "樹脂とフィルムに設備投資",
      "source": null
    },
    {
      "date": "1971/8",
      "importance": 3,
      "event": "炭素繊維「トレカ」の生産開始",
      "source": "有価証券報告書",
      "link": "/tse/3402/decisions/carbon-fiber-commercialization-1971/"
    },
    {
      "date": "1975/1",
      "importance": 1,
      "event": "石川工場を新設",
      "source": null
    },
    {
      "date": "1975/9",
      "importance": 3,
      "event": "経営陣が脱繊維を否定",
      "source": null,
      "link": "/tse/3402/decisions/fiber-commitment-1975/"
    },
    {
      "date": "1985",
      "importance": 1,
      "event": "インターフェロン-β製剤の製造承認を取得",
      "source": null
    },
    {
      "date": "1985/7",
      "importance": 1,
      "event": "繊維部門の人員配置転換",
      "source": null
    },
    {
      "date": "1987",
      "importance": 3,
      "event": "前田勝之助氏が社長就任",
      "source": null,
      "link": "/tse/3402/decisions/maeda-reform-1987/"
    },
    {
      "date": "1990/4",
      "importance": 1,
      "event": "B777向け炭素繊維を納入",
      "source": null
    },
    {
      "date": "1991/4",
      "importance": 1,
      "event": "長期経営ビジョンAP-G2000を策定",
      "source": null
    },
    {
      "date": "1993/10",
      "importance": 1,
      "event": "カラーフィルターの量産開始",
      "source": null
    },
    {
      "date": "1994",
      "importance": 1,
      "event": "現地生産開始",
      "source": null
    },
    {
      "date": "1997/4",
      "importance": 1,
      "event": "長期経営ビジョンNew AP-G2000を策定",
      "source": null
    },
    {
      "date": "2000/3",
      "importance": 2,
      "event": "最終赤字に転落",
      "source": null
    },
    {
      "date": "2002/4",
      "importance": 1,
      "event": "中期経営課題NT21を策定",
      "source": null
    },
    {
      "date": "2004/8",
      "importance": 1,
      "event": "蝶理を子会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "2006",
      "importance": 2,
      "event": "B787向け炭素繊維を納入",
      "source": null
    },
    {
      "date": "2006/3",
      "importance": 3,
      "event": "ファーストリテイリングと業務提携",
      "source": "週刊東洋経済 2012年4月12日号",
      "link": "/tse/3402/decisions/uniqlo-heattech-partnership-2006/"
    },
    {
      "date": "2010/3",
      "importance": 1,
      "event": "2期連続の最終赤字に転落",
      "source": null
    },
    {
      "date": "2014/2",
      "importance": 3,
      "event": "Zoltek Companiesを買収",
      "source": null,
      "link": "/tse/3402/decisions/zoltek-acquisition-2014/"
    },
    {
      "date": "2018/7",
      "importance": 3,
      "event": "TCACを買収",
      "source": null,
      "link": "/tse/3402/decisions/advanced-composites-acquisition-2018/"
    },
    {
      "date": "2020/6",
      "importance": 1,
      "event": "人員解雇",
      "source": null
    },
    {
      "date": "2023/4",
      "importance": 1,
      "event": "中期経営課題PJ「AP-2025」を開始",
      "source": null
    },
    {
      "date": "2024",
      "importance": 2,
      "event": "構造改革「Dプロ」の開始",
      "source": null
    },
    {
      "date": "2024/3",
      "importance": 1,
      "event": "政策保有株式の順次売却を公表",
      "source": null
    }
  ]
}