{
  "timeline": [
    {
      "date": "1937/",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "日本油脂株式会社の発足（合同油脂・ベルベット石鹸・国産工業不二塗料製造所等の合併）",
      "detail": "1937年に4社合併で旧日本油脂を設立し、油脂・石鹸・塗料の総合化学会社の基礎を築いた。",
      "significance": "合併によって油脂・石鹸・塗料を一体運営する総合化学メーカーが誕生し、後年の機能化学品事業の母体となった",
      "source": "有価証券報告書"
    },
    {
      "date": "1949/7",
      "category": "会社設立|構造改革",
      "region": "",
      "importance": 3,
      "event": "企業再建整備法に基づき分離独立し日本油脂株式会社を再設立、東京証券取引所に上場",
      "detail": "1945年に日産化学工業へ改称後、1949年7月の企業再建整備法に基づき油脂・塗料・火薬・溶接棒事業を継承する第二会社として分離独立。同年9月に東証上場。",
      "significance": "戦後再編で母体の日産化学工業から分離し、上場会社としての日本油脂が誕生した",
      "source": "有価証券報告書"
    },
    {
      "date": "1970/6",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "帝国火工品製造株式会社を吸収合併",
      "detail": "",
      "significance": "火薬・化薬事業の基盤強化につながる戦後の重要M&A",
      "source": "有価証券報告書"
    },
    {
      "date": "1973/6",
      "category": "合弁設立|海外進出",
      "region": "米州",
      "importance": 2,
      "event": "米国DIAMOND SHAMROCK社と合弁で日本ダクロシャムロックを設立",
      "detail": "後にNOFメタルコーティングス株式会社となり、防錆事業の中核子会社に発展。",
      "significance": "防錆コーティング事業の起点となった海外資本との合弁",
      "source": "有価証券報告書"
    },
    {
      "date": "1977/6",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "大分工場を開設",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1980/12",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "川越工場を分離し日油技研工業株式会社を設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1983/2",
      "category": "研究開発|設備投資",
      "region": "",
      "importance": 2,
      "event": "筑波研究所（現・先端技術研究所）を開設",
      "detail": "",
      "significance": "医薬・電材へ向かう研究開発の中核拠点を整備",
      "source": "有価証券報告書"
    },
    {
      "date": "1984/9",
      "category": "合弁設立|海外進出",
      "region": "米州",
      "importance": 2,
      "event": "米国でDIAMOND SHAMROCK CHEMICALSと合弁METAL COATINGS INTERNATIONAL INC.を設立",
      "detail": "",
      "significance": "北米防錆コーティング事業の橋頭堡を確立",
      "source": "有価証券報告書"
    },
    {
      "date": "1988/3",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "決算期日を11月30日から3月31日に変更",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1988/12",
      "category": "海外進出",
      "region": "米州",
      "importance": 1,
      "event": "米国にNOF AMERICA CORPORATIONを設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1994/3",
      "category": "事業撤退",
      "region": "",
      "importance": 1,
      "event": "美唄工場を廃止し子会社へ業務移管",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1994/7",
      "category": "海外進出",
      "region": "欧州",
      "importance": 2,
      "event": "ベルギーにNOF EUROPE N.V.を設立",
      "detail": "",
      "significance": "欧州市場へ防錆事業を展開する欧州本社的拠点",
      "source": "有価証券報告書"
    },
    {
      "date": "1994/11",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "本店を千代田区から渋谷区に移転",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1995/11",
      "category": "合弁設立|海外進出",
      "region": "東南アジア",
      "importance": 1,
      "event": "インドネシアにPT.NOF MAS CHEMICAL INDUSTRIESを合弁設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1996/2",
      "category": "合弁設立",
      "region": "",
      "importance": 1,
      "event": "株式会社ジャペックスを合弁設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1999/10",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "日本工機株式会社の発行済株式95%を取得",
      "detail": "",
      "significance": "化薬事業の中核となる日本工機を子会社化",
      "source": "有価証券報告書"
    },
    {
      "date": "1999/12",
      "category": "新規事業",
      "region": "",
      "importance": 1,
      "event": "新規事業開発部を「ライフサイエンス事業部」へ名称変更",
      "detail": "",
      "significance": "ライフサイエンス領域への注力を組織名称で明示",
      "source": "有価証券報告書"
    },
    {
      "date": "2000/3",
      "category": "事業売却",
      "region": "",
      "importance": 2,
      "event": "株式会社タセトへ溶接事業を譲渡し溶接事業部廃止・神明工場閉鎖",
      "detail": "",
      "significance": "溶接棒事業からの撤退、選択と集中の一環",
      "source": "有価証券報告書"
    },
    {
      "date": "2000/9",
      "category": "事業売却",
      "region": "",
      "importance": 2,
      "event": "塗料事業をBASF系合弁へ営業譲渡",
      "detail": "",
      "significance": "塗料事業からの段階的撤退の起点",
      "source": "有価証券報告書"
    },
    {
      "date": "2001/4",
      "category": "新規事業",
      "region": "",
      "importance": 1,
      "event": "「電材事業開発部」を新設",
      "detail": "",
      "significance": "電子材料への布石",
      "source": "有価証券報告書"
    },
    {
      "date": "2001/4",
      "category": "企業買収",
      "region": "東南アジア",
      "importance": 1,
      "event": "PT.SINAR MAS TUNGGALからPT.NOF MASの全保有株式を取得",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2001/10",
      "category": "新規事業",
      "region": "",
      "importance": 2,
      "event": "「DDS事業開発部」を新設",
      "detail": "",
      "significance": "薬物送達システム（DDS）への正式参入",
      "source": "有価証券報告書"
    },
    {
      "date": "2002/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "日油自動車運輸を日油サービスに吸収合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2002/9",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "ニチユソリューション株式会社を設立し関連子会社を統合",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2002/11",
      "category": "組織再編",
      "region": "欧州",
      "importance": 1,
      "event": "NOF EUROPE N.V.を分離・商号変更し欧州体制を再編",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2003/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "日本油業株式会社を油化産業株式会社に吸収合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/4",
      "category": "事業売却",
      "region": "",
      "importance": 1,
      "event": "タセト株式の全保有分を神鋼タセトへ譲渡",
      "detail": "",
      "significance": "溶接関連からの完全撤退",
      "source": "有価証券報告書"
    },
    {
      "date": "2004/10",
      "category": "海外進出",
      "region": "中国",
      "importance": 2,
      "event": "中国江蘇省に常熟日油化工有限公司を設立",
      "detail": "",
      "significance": "中国生産拠点の確立",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/3",
      "category": "事業売却",
      "region": "",
      "importance": 2,
      "event": "日本油脂BASFコーティングスの全保有株式をBASFへ譲渡",
      "detail": "",
      "significance": "塗料事業からの最終撤退",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/4",
      "category": "企業買収",
      "region": "",
      "importance": 1,
      "event": "株式会社ニッカコーティング、KOREA SHAMROCKを連結子会社化",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/6",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "「防錆部門」を新設",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/4",
      "category": "事業売却",
      "region": "",
      "importance": 1,
      "event": "神鋼タセト株式の全保有株式を神戸製鋼所へ譲渡",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/10",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "社名を「日本油脂株式会社」から「日油株式会社」に変更",
      "detail": "",
      "significance": "合併経緯から脱却し、機能化学品メーカーとしてのブランド再定義",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/10",
      "category": "新規事業",
      "region": "",
      "importance": 1,
      "event": "「機能フィルム事業部」を新設、「DDS事業部」へ名称変更",
      "detail": "",
      "significance": "DDSの本格事業化と機能フィルム参入",
      "source": "有価証券報告書"
    },
    {
      "date": "2010/9",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "日油技研工業株式会社を株式交換により完全子会社化",
      "detail": "",
      "significance": "化薬・防衛関連子会社のグループ統合",
      "source": "有価証券報告書"
    },
    {
      "date": "2011/2",
      "category": "海外進出",
      "region": "中国",
      "importance": 1,
      "event": "中国上海市に日油（上海）商貿有限公司を設立",
      "detail": "",
      "significance": "中国販社網の確立",
      "source": "有価証券報告書"
    },
    {
      "date": "2013/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "「機能フィルム事業部」と「電材事業開発部」を統合し「ディスプレイ材料事業部」を新設",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2014/11",
      "category": "海外進出",
      "region": "欧州",
      "importance": 1,
      "event": "ドイツにNOF EUROPE GmbHを設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2020/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "「ディスプレイ材料事業部」を「化成事業部」に統合",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2020/4",
      "category": "企業買収",
      "region": "中国",
      "importance": 1,
      "event": "恩欧富塗料商貿（上海）有限公司を連結子会社化",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/4",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "東京証券取引所プライム市場に移行",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2023/4",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "「油化事業部」と「化成事業部」を統合し「機能材料事業部」を新設、「ライフサイエンス事業部」と「DDS事業部」を統合",
      "detail": "",
      "significance": "DDS・ライフサイエンス事業の一体運営による医薬・医療領域強化",
      "source": "有価証券報告書"
    },
    {
      "date": "2024/4",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "北海道日油株式会社を日本工機株式会社に吸収合併",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    }
  ]
}