{
  "timeline": [
    {
      "date": "1949/5",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "日本電子光学研究所を三鷹市に設立、電子顕微鏡の製造販売を開始",
      "detail": "東京都三鷹市に「株式会社日本電子光学研究所」（資本金500千円）設立、電子顕微鏡の製造・販売を開始",
      "significance": "電子顕微鏡国産化の起点",
      "source": "有価証券報告書",
      "amount": "資本金500千円"
    },
    {
      "date": "1952/11",
      "category": "新規事業",
      "region": "",
      "importance": 2,
      "event": "産業機器分野へ進出（高周波焼入装置完成）",
      "detail": "産業機器分野に進出（高周波焼入装置完成）",
      "significance": "事業領域拡張",
      "source": "有価証券報告書"
    },
    {
      "date": "1956/8",
      "category": "新規事業",
      "region": "",
      "importance": 2,
      "event": "分析機器分野へ進出（磁気共鳴装置完成）",
      "detail": "分析機器分野に進出（磁気共鳴装置完成）",
      "significance": "NMR等分析機器事業の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "1960/9",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "さくら精機（後の日本電子テクニクス）を設立",
      "detail": "東京都昭島市に「さくら精機株式会社」（1989年12月「日本電子テクニクス株式会社」に変更、2021年4月当社に吸収合併）設立",
      "significance": "生産子会社設置",
      "source": "有価証券報告書"
    },
    {
      "date": "1961/5",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "「日本電子株式会社」に商号変更",
      "detail": "「日本電子株式会社」に商号変更",
      "significance": "社名統一",
      "source": "有価証券報告書"
    },
    {
      "date": "1962/4",
      "category": "株式上場",
      "region": "",
      "importance": 3,
      "event": "東証二部に上場",
      "detail": "東京証券取引所市場第二部に上場",
      "significance": "公開市場参入",
      "source": "有価証券報告書"
    },
    {
      "date": "1962/12",
      "category": "海外進出",
      "region": "米州",
      "importance": 3,
      "event": "米国JEOLCO(U.S.A.)を設立",
      "detail": "米国に「JEOLCO(U.S.A.)INC.」設立（1993年4月「JEOL USA,INC.」に変更）",
      "significance": "海外展開の起点、米国市場参入",
      "source": "有価証券報告書"
    },
    {
      "date": "1964/4",
      "category": "設備投資|研究開発",
      "region": "",
      "importance": 2,
      "event": "昭島製作所開発館完成",
      "detail": "昭島製作所開発館完成",
      "significance": "R&D機能拡張",
      "source": "有価証券報告書"
    },
    {
      "date": "1964/11",
      "category": "海外進出",
      "region": "欧州",
      "importance": 3,
      "event": "フランスJEOLCO(FRANCE)を設立",
      "detail": "フランスに「JEOLCO(FRANCE)S.A.」設立（2005年4月「JEOL(EUROPE)SAS」に変更）",
      "significance": "欧州事業の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "1966/6",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "本店を三鷹市より昭島市へ移転",
      "detail": "本店を三鷹市より昭島市へ移転登記",
      "significance": "本社拠点移転",
      "source": "有価証券報告書"
    },
    {
      "date": "1966/8",
      "category": "株式上場",
      "region": "",
      "importance": 3,
      "event": "東証一部に上場",
      "detail": "東京証券取引所市場第一部に上場",
      "significance": "大企業地位確立",
      "source": "有価証券報告書"
    },
    {
      "date": "1968/7",
      "category": "海外進出",
      "region": "欧州",
      "importance": 2,
      "event": "英国子会社を設立",
      "detail": "英国に「JEOLCO(U.K.)LTD.」設立",
      "significance": "英国市場進出",
      "source": "有価証券報告書"
    },
    {
      "date": "1968/10",
      "category": "海外進出",
      "region": "その他",
      "importance": 2,
      "event": "豪州子会社を設立",
      "detail": "豪州に「JEOL(AUSTRALASIA)PTY.LTD.」設立",
      "significance": "大洋州市場進出",
      "source": "有価証券報告書"
    },
    {
      "date": "1971/4",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "英文社名をJEOL Ltd.に変更",
      "detail": "英文社名をJEOL Ltd.に変更",
      "significance": "海外ブランド統一",
      "source": "有価証券報告書"
    },
    {
      "date": "1972/4",
      "category": "新規事業",
      "region": "",
      "importance": 3,
      "event": "医用機器分野へ進出（生化学自動分析装置完成）",
      "detail": "医用機器分野に進出（生化学自動分析装置完成）",
      "significance": "医用機器事業の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "1973/2",
      "category": "海外進出",
      "region": "欧州",
      "importance": 1,
      "event": "オランダ子会社を設立",
      "detail": "オランダに「JEOL(EUROPE)B.V.」設立",
      "significance": "欧州販売網拡大",
      "source": "有価証券報告書"
    },
    {
      "date": "1973/3",
      "category": "海外進出",
      "region": "欧州",
      "importance": 1,
      "event": "スウェーデン子会社を設立",
      "detail": "スウェーデンに「JEOL(SKANDINAVISKA)A.B.」設立",
      "significance": "北欧市場進出",
      "source": "有価証券報告書"
    },
    {
      "date": "1984/4",
      "category": "海外進出",
      "region": "欧州",
      "importance": 1,
      "event": "イタリア子会社を設立",
      "detail": "イタリアに「JEOL(ITALIA)S.p.A.」設立",
      "significance": "南欧市場進出",
      "source": "有価証券報告書"
    },
    {
      "date": "1994/2",
      "category": "海外進出",
      "region": "その他",
      "importance": 1,
      "event": "韓国子会社を設立",
      "detail": "韓国に「JEOL KOREA LTD.」設立",
      "significance": "韓国市場進出",
      "source": "有価証券報告書"
    },
    {
      "date": "1995/1",
      "category": "海外進出",
      "region": "東南アジア",
      "importance": 2,
      "event": "シンガポール子会社（JEOL ASIA）を設立",
      "detail": "シンガポールに「JEOL ASIA PTE.LTD.」設立",
      "significance": "アジア統括拠点設置",
      "source": "有価証券報告書"
    },
    {
      "date": "1997/6",
      "category": "海外進出",
      "region": "欧州",
      "importance": 1,
      "event": "ドイツ子会社を設立",
      "detail": "ドイツに「JEOL(GERMANY)GmbH」設立",
      "significance": "欧州拠点拡大",
      "source": "有価証券報告書"
    },
    {
      "date": "1999/1",
      "category": "海外進出",
      "region": "その他",
      "importance": 1,
      "event": "台湾子会社を設立",
      "detail": "台湾に「JEOL DATUM TAIWAN LTD.」設立（2003年7月「JEOL TAIWAN SEMICONDUCTORS LTD.」に変更）",
      "significance": "半導体検査装置の台湾市場対応",
      "source": "有価証券報告書"
    },
    {
      "date": "2002/3",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "山形クリエイティブを設立",
      "detail": "「山形クリエイティブ株式会社」設立（2016年4月「日本電子山形株式会社」に変更）",
      "significance": "生産機能拡張",
      "source": "有価証券報告書"
    },
    {
      "date": "2009/7",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "日本電子データム・アクティブを吸収合併",
      "detail": "「日本電子データム株式会社」「日本電子アクティブ株式会社」当社に吸収合併",
      "significance": "グループ簡素化",
      "source": "有価証券報告書"
    },
    {
      "date": "2011/4",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "JEOL RESONANCE を分社新設",
      "detail": "東京都昭島市に分社型の新設分割により「株式会社JEOL RESONANCE」設立（2022年10月当社に吸収合併）",
      "significance": "NMR事業を分社化",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/12",
      "category": "企業買収",
      "region": "その他",
      "importance": 2,
      "event": "JEOL KOREAを100％子会社化",
      "detail": "「JEOL KOREA LTD.」100％子会社化",
      "significance": "韓国子会社の完全子会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "2020/1",
      "category": "企業買収",
      "region": "米州",
      "importance": 2,
      "event": "Integrated Dynamic Electron Solutionsを全株式取得",
      "detail": "米国の「Integrated Dynamic Electron Solutions, Inc.」の全株式を取得",
      "significance": "電子顕微鏡関連技術強化",
      "source": "有価証券報告書"
    },
    {
      "date": "2021/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "日本電子テクニクスを吸収合併",
      "detail": "「日本電子テクニクス株式会社」当社に吸収合併",
      "significance": "生産子会社の本体統合",
      "source": "有価証券報告書"
    },
    {
      "date": "2021/10",
      "category": "設備投資",
      "region": "",
      "importance": 3,
      "event": "武蔵村山製作所を開所",
      "detail": "武蔵村山製作所開所",
      "significance": "生産能力大幅拡張",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/10",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "JEOL RESONANCEを吸収合併",
      "detail": "「株式会社JEOL RESONANCE」当社に吸収合併",
      "significance": "NMR事業を本体に統合",
      "source": "有価証券報告書"
    },
    {
      "date": "2025/1",
      "category": "企業買収",
      "region": "",
      "importance": 3,
      "event": "ジャパンスーパーコンダクタテクノロジーを買収",
      "detail": "「ジャパンスーパーコンダクタテクノロジー株式会社」の全株式を取得",
      "significance": "超伝導磁石技術の取得",
      "source": "有価証券報告書"
    },
    {
      "date": "2025/1",
      "category": "組織再編",
      "region": "欧州",
      "importance": 2,
      "event": "JEOL HOLDING EUROPEを設立",
      "detail": "フランスに「JEOL HOLDING EUROPE SAS」設立",
      "significance": "欧州事業の持株会社化",
      "source": "有価証券報告書"
    }
  ]
}