{
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  "endpoint": "timeline",
  "stock_code": "7729",
  "company_name": "東京精密",
  "content_lang": "ja",
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  "updated": "2026-09-04",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/7729/",
  "source": {
    "primary": [
      "有価証券報告書"
    ],
    "extraction": "有価証券報告書の沿革を基礎に、社史・報道で補完",
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  "timeline": [
    {
      "date": "1949/3",
      "importance": 1,
      "event": "前身の東京精密工具を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1953/1",
      "importance": 3,
      "event": "高圧流量式空気マイクロメータの日本初工業化に成功",
      "source": "有価証券報告書",
      "link": "/tse/7729/decisions/air-micrometer-shift-1953/"
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    {
      "date": "1957/10",
      "importance": 2,
      "event": "差動変圧式電気マイクロメータの日本初工業化に成功",
      "source": "有価証券報告書"
    },
    {
      "date": "1962/4",
      "importance": 1,
      "event": "東京精密に商号変更",
      "source": "有価証券報告書"
    },
    {
      "date": "1962/8",
      "importance": 1,
      "event": "東京証券取引所市場第二部に株式を上場",
      "source": "有価証券報告書"
    },
    {
      "date": "1963/12",
      "importance": 1,
      "event": "八王子工場第一期工事完成",
      "source": "有価証券報告書"
    },
    {
      "date": "1969/4",
      "importance": 1,
      "event": "アフターサービス担当の東精エンジニアリングサービスを設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1969/7",
      "importance": 1,
      "event": "土浦工場第一期工事完成",
      "source": "有価証券報告書"
    },
    {
      "date": "1971/1",
      "importance": 1,
      "event": "八王子工場本館完成",
      "source": "有価証券報告書"
    },
    {
      "date": "1981/8",
      "importance": 1,
      "event": "土浦工場に三次元座標測定機専用工場が竣工",
      "source": "有価証券報告書"
    },
    {
      "date": "1985/10",
      "importance": 1,
      "event": "ソフトウェア開発担当のトーセーシステムズを設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1986/9",
      "importance": 1,
      "event": "東京証券取引所市場第一部銘柄に指定",
      "source": "有価証券報告書"
    },
    {
      "date": "1989/3",
      "importance": 1,
      "event": "ドイツにTOKYO SEIMITSU EUROPE GmbHを設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1989/10",
      "importance": 1,
      "event": "TOKYO SEIMITSU AMERICA INC.を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1992/10",
      "importance": 2,
      "event": "SILICON TECHNOLOGY CORPORATIONを買収",
      "source": "有価証券報告書"
    },
    {
      "date": "1995/4",
      "importance": 1,
      "event": "子会社統括管理目的でTSK AMERICA INC.を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1997/7",
      "importance": 1,
      "event": "八王子第2工場が竣工",
      "source": "有価証券報告書"
    },
    {
      "date": "1998/1",
      "importance": 1,
      "event": "北米地域TSK AMERICA INC.を存続会社とし米国内子会社4社を統合合併",
      "source": "有価証券報告書"
    },
    {
      "date": "1999/4",
      "importance": 1,
      "event": "子会社東精エンジニアリングの土浦本社・工場が竣工",
      "source": "有価証券報告書"
    },
    {
      "date": "2001/6",
      "importance": 1,
      "event": "子会社東精エンジニアリングが東京証券取引所二部上場",
      "source": "有価証券報告書"
    },
    {
      "date": "2002/10",
      "importance": 1,
      "event": "東精精密設備（上海）有限公司を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/3",
      "importance": 1,
      "event": "八王子第3工場・土浦新本館完成",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/10",
      "importance": 1,
      "event": "株式交換で子会社東精エンジニアリングを完全子会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "2008/3",
      "importance": 1,
      "event": "子会社東精エンジニアリングの土浦半導体工場が竣工",
      "source": "有価証券報告書"
    },
    {
      "date": "2011/6",
      "importance": 1,
      "event": "八王子第5工場が竣工",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/4",
      "importance": 1,
      "event": "ACCRETECH AMERICA INC.を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/8",
      "importance": 2,
      "event": "精密切断ブレード事業を事業譲受により開始",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/2",
      "importance": 2,
      "event": "富士通テレコムネットワークス福島の株式取得で子会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/11",
      "importance": 2,
      "event": "SCHMITT INDUSTRIES INC.のバランサ事業を買収",
      "source": "有価証券報告書"
    },
    {
      "date": "2020/5",
      "importance": 1,
      "event": "土浦工場MI棟完成",
      "source": "有価証券報告書"
    },
    {
      "date": "2021/3",
      "importance": 1,
      "event": "子会社ACCRETECH TAIWAN CO.LTD.の新社屋が完成",
      "source": "有価証券報告書"
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    {
      "date": "2021/3",
      "importance": 1,
      "event": "台湾新アプリケーションセンタを設立",
      "source": "有価証券報告書"
    },
    {
      "date": "2023/7",
      "importance": 1,
      "event": "飯能工場が竣工",
      "source": "有価証券報告書"
    }
  ]
}