{
  "timeline": [
    {
      "date": "1918/10",
      "category": "会社設立",
      "region": "",
      "importance": 3,
      "event": "日東電気工業株式会社を東京・大崎で設立",
      "detail": "日東商会製作所を買収。第一次大戦による輸入途絶を受けて電気絶縁用ワニスクロスの国産化を目指す。初代社長は稲村藤太郎",
      "significance": "大戦期の輸入代替として電気絶縁材料の国産化を担う",
      "source": "有価証券報告書",
      "amount": "従業員14名"
    },
    {
      "date": "1937/5",
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "日立製作所と業務資本提携",
      "detail": "日立製作所が日東電工株式100%を取得し、子会社として経営再建に着手。主要顧客を失い稲村社長が1930年に逝去した経営難局を打開",
      "significance": "経営危機からの再建を日立グループ入りで実現。戦時中の主力顧客との資本一体化",
      "source": ""
    },
    {
      "date": "1941/12",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "水谷ワニスペイントを買収、茨木工場を取得",
      "detail": "関西の絶縁用ワニス製造拠点として",
      "significance": "戦時中の関西生産拠点確保。後に空襲で大崎工場が焼失し唯一の本拠地となる",
      "source": "有価証券報告書"
    },
    {
      "date": "1945/5",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "空襲で東京・大崎工場（本社）を焼失",
      "detail": "主要生産拠点が大阪・茨木の1拠点体制となる",
      "significance": "戦災により本拠地が関西に移る",
      "source": ""
    },
    {
      "date": "1946/7",
      "category": "組織再編",
      "region": "",
      "importance": 1,
      "event": "本社を茨木市に移転",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1948/7",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "日立製作所との資本提携を解消",
      "detail": "財閥解体に伴い日立製作所が日東電工株式を売却。独立系企業となる",
      "significance": "戦後の独立系企業としての再出発",
      "source": ""
    },
    {
      "date": "1950/8",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "乾電池の製造を開始、マクセルブランドで展開",
      "detail": "消費者向け（BtoC）事業への参入",
      "significance": "戦後復興期の民需事業拡大。後にマクセルとして分離される",
      "source": ""
    },
    {
      "date": "1951/4",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "ビニルテープの開発に成功",
      "detail": "国内初",
      "significance": "絶縁テープからビニル粘着テープへ製品領域を拡大",
      "source": ""
    },
    {
      "date": "1957/6",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "ブラックテープの製造開始、テープ事業に進出",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1961/2",
      "category": "組織再編",
      "region": "",
      "importance": 3,
      "event": "乾電池・磁気テープ部門をマクセル電気工業として分離、日立製作所に売却",
      "detail": "BtoC事業の整理。産業向け（BtoB）特化へ転換",
      "significance": "消費者向けから産業向けへの事業転換。以降のニッチトップ戦略の基盤",
      "source": "有価証券報告書"
    },
    {
      "date": "1962/5",
      "category": "設備投資",
      "region": "",
      "importance": 1,
      "event": "豊橋事業所操業",
      "detail": "粘着テープ生産拠点",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1962/8",
      "category": "株式上場",
      "region": "",
      "importance": 2,
      "event": "東京・大阪両証券取引所に株式上場",
      "detail": "",
      "significance": "公開会社としての資本調達体制確立",
      "source": "有価証券報告書"
    },
    {
      "date": "1965",
      "category": "",
      "region": "",
      "importance": 2,
      "event": "半導体封止材料に参入",
      "detail": "",
      "significance": "後のエレクトロニクス材料事業の出発点",
      "source": ""
    },
    {
      "date": "1968/12",
      "category": "",
      "region": "米州",
      "importance": 2,
      "event": "Nitto Denko America, Inc.を設立",
      "detail": "米国販売拠点",
      "significance": "海外展開の端緒",
      "source": "有価証券報告書"
    },
    {
      "date": "1969/12",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "Nitto Denko (Taiwan) Corporationを設立",
      "detail": "",
      "significance": "アジア拠点の第一歩",
      "source": "有価証券報告書"
    },
    {
      "date": "1973/6",
      "category": "研究開発",
      "region": "",
      "importance": 3,
      "event": "フレキシブル回路基板の製造開始",
      "detail": "米サンダース社と技術提携",
      "significance": "後のエレクトロニクス事業の柱となるFPC事業の開始",
      "source": "有価証券報告書"
    },
    {
      "date": "1974/2",
      "category": "",
      "region": "欧州",
      "importance": 1,
      "event": "Nitto Europe NV（現Nitto Belgium NV）を設立",
      "detail": "欧州拠点",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "1975/4",
      "category": "",
      "region": "",
      "importance": 4,
      "event": "液晶表示用偏光フィルムの製造開始",
      "detail": "",
      "significance": "後に世界シェア首位級に成長し、同社の基幹事業となる液晶偏光板事業の出発点",
      "source": "有価証券報告書"
    },
    {
      "date": "1975",
      "category": "経営計画",
      "region": "",
      "importance": 3,
      "event": "三新活動（三新運動）を開始",
      "detail": "土方三郎社長の下、過去3年以内の新製品が占める売上比率30%以上を目標、研究開発費を売上高対比5%前後に設定",
      "significance": "オイルショック後の減収を受けた新規事業開拓方針。以後の研究開発文化の基盤",
      "source": "",
      "amount": "新製品売上比率30%以上"
    },
    {
      "date": "1976/4",
      "category": "研究開発",
      "region": "",
      "importance": 2,
      "event": "高分子分離膜の製造開始",
      "detail": "",
      "significance": "後のメンブレン事業（海水淡水化RO膜等）の基礎技術",
      "source": "有価証券報告書"
    },
    {
      "date": "1977/3",
      "category": "設備投資",
      "region": "",
      "importance": 2,
      "event": "東北事業所を操業、医療関連材料の専門工場",
      "detail": "",
      "significance": "医療材料事業の本格量産化",
      "source": "有価証券報告書"
    },
    {
      "date": "1978",
      "category": "経営計画",
      "region": "",
      "importance": 2,
      "event": "新規事業として電子・医療・防食・膜の4領域に注力方針",
      "detail": "三新活動の延長上にある事業ポートフォリオ戦略",
      "significance": "後の基幹事業群の方向性を定める",
      "source": ""
    },
    {
      "date": "1980/1",
      "category": "",
      "region": "東南アジア",
      "importance": 1,
      "event": "Nitto Denko (Singapore) Pte. Ltd.を設立",
      "detail": "",
      "significance": "東南アジア生産拠点",
      "source": "有価証券報告書"
    },
    {
      "date": "1983/12",
      "category": "研究開発",
      "region": "",
      "importance": 3,
      "event": "経皮吸収型テープ製剤の製造開始",
      "detail": "医薬品事業への本格参入",
      "significance": "粘着技術を医薬品デリバリーに応用する新規領域開拓",
      "source": "有価証券報告書"
    },
    {
      "date": "1986/4",
      "category": "設備投資",
      "region": "",
      "importance": 2,
      "event": "滋賀事業所を操業、高分子分離膜の専門工場",
      "detail": "",
      "significance": "膜事業の本格量産化",
      "source": "有価証券報告書"
    },
    {
      "date": "1987/11",
      "category": "企業買収",
      "region": "米州",
      "importance": 3,
      "event": "米Hydranauticsを買収",
      "detail": "RO膜の米国メーカー",
      "significance": "海水淡水化市場への参入。後のメンブレン事業の中核に",
      "source": "有価証券報告書"
    },
    {
      "date": "1988/9",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "商号を日東電気工業より日東電工へ変更",
      "detail": "",
      "significance": "電気材料専業から電子材料・機能材料企業への事業領域拡大を社名で明示",
      "source": "有価証券報告書"
    },
    {
      "date": "1995/12",
      "category": "",
      "region": "中国",
      "importance": 1,
      "event": "Nitto Denko (Shanghai Songjiang)を設立",
      "detail": "",
      "significance": "中国進出",
      "source": "有価証券報告書"
    },
    {
      "date": "1999/1",
      "category": "設備投資",
      "region": "",
      "importance": 3,
      "event": "尾道事業所を操業、液晶表示関連材料の専門工場",
      "detail": "",
      "significance": "液晶偏光板の量産拠点。以後の大型液晶パネル需要拡大を支える",
      "source": "有価証券報告書"
    },
    {
      "date": "1999/11",
      "category": "",
      "region": "その他",
      "importance": 2,
      "event": "Korea Nitto Optical Co., Ltd.を設立",
      "detail": "韓国の液晶パネルメーカー向け偏光板供給",
      "significance": "韓国ディスプレイ産業との連携",
      "source": "有価証券報告書"
    },
    {
      "date": "2003/4",
      "category": "",
      "region": "中国",
      "importance": 2,
      "event": "Taiwan Nitto Opticalを設立",
      "detail": "台湾ディスプレイメーカー向け",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2005/7",
      "category": "",
      "region": "",
      "importance": 1,
      "event": "Shanghai Nitto Opticalを設立",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2006/1",
      "category": "組織再編",
      "region": "",
      "importance": 2,
      "event": "本社機能を大阪市北区に移転",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/6",
      "category": "社長交代",
      "region": "",
      "importance": 2,
      "event": "柳楽幸雄が取締役社長に就任",
      "detail": "竹本正道の後任",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2009/3",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "リーマンショックで営業利益が138億円へ急落",
      "detail": "前期779億円からの激減。売上高も5,779億円に減少",
      "significance": "世界金融危機による電子部品市況の収縮が直撃",
      "source": "有価証券報告書",
      "amount": "営業利益138億円"
    },
    {
      "date": "2011/2",
      "category": "企業買収",
      "region": "",
      "importance": 3,
      "event": "米Avecia Biotechnology（現Nitto Denko Avecia）を買収",
      "detail": "オリゴヌクレオチドCDMO",
      "significance": "メディカル事業の柱の一つとなる核酸医薬受託製造事業への参入",
      "source": "有価証券報告書"
    },
    {
      "date": "2012/6",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "トルコBento Banticilik（現Nitto Bento）を買収",
      "detail": "粘着テープメーカー",
      "significance": "新興国テープ市場への参入",
      "source": "有価証券報告書"
    },
    {
      "date": "2013/6",
      "category": "社長交代",
      "region": "",
      "importance": 2,
      "event": "髙﨑秀雄が取締役社長に就任",
      "detail": "柳楽幸雄の後任",
      "significance": "ニッチトップ戦略を経営軸とする現体制の始動",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/3",
      "category": "設備投資",
      "region": "",
      "importance": 2,
      "event": "研究開発・人財育成施設inovasを茨木事業所内に開設",
      "detail": "",
      "significance": "三新活動以来の研究開発文化を支える拠点整備",
      "source": "有価証券報告書"
    },
    {
      "date": "2016/11",
      "category": "経営計画",
      "region": "",
      "importance": 3,
      "event": "ブリストル・マイヤーズスクイブと臓器線維症治療薬のグローバル独占ライセンス契約",
      "detail": "",
      "significance": "核酸医薬パイプラインの強化",
      "source": "有価証券報告書"
    },
    {
      "date": "2017/11",
      "category": "経営計画",
      "region": "中国",
      "importance": 3,
      "event": "杭州錦江集団と大型偏光板技術提携契約",
      "detail": "中国への偏光板技術供与",
      "significance": "液晶偏光板事業の中国シフトを加速する戦略転換",
      "source": "有価証券報告書"
    },
    {
      "date": "2018/3",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "売上収益8,574億円・営業利益1,257億円で過去最高",
      "detail": "",
      "significance": "液晶偏光板とエレクトロニクス事業のピーク",
      "source": "有価証券報告書",
      "amount": "売上収益8,574億円、営業利益1,257億円"
    },
    {
      "date": "2022/4",
      "category": "株式上場",
      "region": "",
      "importance": 1,
      "event": "東証プライム市場に移行",
      "detail": "",
      "significance": "",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/5",
      "category": "企業買収",
      "region": "",
      "importance": 2,
      "event": "米Bend Labs, Inc.（現Nitto Bend Technologies）を買収",
      "detail": "ウェアラブルセンサー技術",
      "significance": "ヒューマンインターフェース領域への拡張",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/6",
      "category": "企業買収",
      "region": "欧州",
      "importance": 3,
      "event": "英Mondi plcのパーソナルケア事業を買収",
      "detail": "不織布・機能フィルム事業。Nitto Advanced FilmGronau等3社",
      "significance": "パーソナルケア領域への本格参入。欧州拠点の拡大",
      "source": "有価証券報告書"
    },
    {
      "date": "2025/3",
      "category": "",
      "region": "",
      "importance": 3,
      "event": "連結売上収益が初の1兆円超え",
      "detail": "売上収益1兆139億円、営業利益1,857億円",
      "significance": "創業107年目で初の1兆円企業化。ニッチトップ戦略下での過去最高益",
      "source": "有価証券報告書",
      "amount": "売上収益1兆139億円、営業利益1,857億円"
    }
  ]
}