{
  "spec_version": "4",
  "endpoint": "history",
  "stock_code": "7240",
  "company_name": "NOK",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/7240/decisions/",
  "api_url": "/api/7240/history.json",
  "updated": "2026-09-26",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/7240/decisions/",
  "source": {
    "long_term": {
      "primary": [
        "会社年鑑（1986年版）",
        "会社年鑑（1976年版）半期合算",
        "会社年鑑（1963年版）半期合算",
        "会社年鑑（1967年版）半期合算",
        "会社年鑑（1971年版）半期合算"
      ],
      "extraction": "EDINET の XBRL、kabupro 掲載の旧有価証券報告書、会社年鑑・社史等からの転記",
      "row_field": "reference",
      "caveat": "創業期から現在までを 1 本に繋いだ長期系列のため、年代により出所・単位・連結範囲が変わる。行ごとの reference / unit / consolidation を必ず参照すること"
    }
  },
  "title": "NOKの歴史概略",
  "eras": [
    {
      "title": "江戸川精機と日本ベアリング製造から日本オイルシール工業の発足まで",
      "start_year": 1939,
      "end_year": 1959
    },
    {
      "title": "フロイデンベルグとの資本提携と東証上場、日本メクトロン設立で電子部品へ",
      "start_year": 1960,
      "end_year": 1984
    },
    {
      "title": "NOKへの改称とタイ・台湾・米国・中国へのシールとFPCの海外展開",
      "start_year": 1985,
      "end_year": 2003
    },
    {
      "title": "鳥取・北茨城の新事業場とベトナム進出、エストーの子会社化",
      "start_year": 2004,
      "end_year": 2026
    }
  ],
  "summary": {
    "description": "NOK（旧日本オイルシール工業）の歴史。1941年に神戸で日本ベアリング製造として発足し、自動車用オイルシールを国産化。独フロイデンベルグとの資本提携、日本メクトロンとイーグル工業の設立までの沿革と経緯を執筆。"
  },
  "long_term": [
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      "year": 1950,
      "month": 3,
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    },
    {
      "year": 1951,
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      "unit": "億円",
      "sales_jp": null,
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    {
      "year": 1952,
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      "sales_jp": null,
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    },
    {
      "year": 1953,
      "month": 3,
      "company_name": "NOK",
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    },
    {
      "year": 1954,
      "month": 3,
      "company_name": "NOK",
      "consolidation": "単体",
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      "unit": "億円",
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    },
    {
      "year": 1955,
      "month": 3,
      "company_name": "NOK",
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    },
    {
      "year": 1956,
      "month": 3,
      "company_name": "NOK",
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      "sales_jp": null,
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    },
    {
      "year": 1957,
      "month": 3,
      "company_name": "NOK",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
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    {
      "year": 1958,
      "month": 3,
      "company_name": "NOK",
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    },
    {
      "year": 1959,
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      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 10,
      "operating_profit_jp": null,
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      "reference": "会社年鑑（1963年版）半期合算"
    },
    {
      "year": 1960,
      "month": 3,
      "company_name": "日本オイルシール工業",
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    },
    {
      "year": 1961,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
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    },
    {
      "year": 1962,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 28,
      "operating_profit_jp": null,
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      "ordinary_profit": null,
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      "reference": "会社年鑑（1963年版）半期合算"
    },
    {
      "year": 1963,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 30,
      "operating_profit_jp": null,
      "operating_profit": null,
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      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 3,
      "net_margin": 10,
      "employees": null,
      "reference": "会社年鑑（1967年版）半期合算"
    },
    {
      "year": 1964,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 41,
      "operating_profit_jp": null,
      "operating_profit": null,
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      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 3,
      "net_margin": 7.317,
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    },
    {
      "year": 1965,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
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      "sales": 50,
      "operating_profit_jp": null,
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    },
    {
      "year": 1966,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
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      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 53,
      "operating_profit_jp": null,
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    },
    {
      "year": 1967,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
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      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 76,
      "operating_profit_jp": null,
      "operating_profit": null,
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      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 3,
      "net_margin": 3.947,
      "employees": null,
      "reference": "会社年鑑（1971年版）半期合算"
    },
    {
      "year": 1968,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 107,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 5,
      "net_margin": 4.672,
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      "reference": "会社年鑑（1971年版）半期合算"
    },
    {
      "year": 1969,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 131,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 6,
      "net_margin": 4.58,
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    },
    {
      "year": 1970,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 170,
      "operating_profit_jp": null,
      "operating_profit": null,
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      "ordinary_profit": null,
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      "net_profit": 7,
      "net_margin": 4.117,
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    },
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      "year": 1971,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
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      "sales_jp": "売上高",
      "sales": 204,
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      "ordinary_profit": 14,
      "net_profit_jp": "当期純利益",
      "net_profit": 8,
      "net_margin": 3.921,
      "employees": null,
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    },
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      "year": 1972,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 205,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 13,
      "net_profit_jp": "当期純利益",
      "net_profit": 8,
      "net_margin": 3.902,
      "employees": null,
      "reference": "会社年鑑（1976年版）半期合算"
    },
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      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
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      "sales_jp": "売上高",
      "sales": 249,
      "operating_profit_jp": null,
      "operating_profit": null,
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      "reference": "会社年鑑（1976年版）半期合算"
    },
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      "year": 1974,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 350,
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      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 26,
      "net_profit_jp": "当期純利益",
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      "net_margin": 4.285,
      "employees": null,
      "reference": "会社年鑑（1976年版）半期合算"
    },
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      "year": 1975,
      "month": 3,
      "company_name": "日本オイルシール工業",
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      "operating_profit_jp": null,
      "operating_profit": null,
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      "net_profit_jp": "当期純利益",
      "net_profit": 14,
      "net_margin": 3.389,
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    },
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      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 413,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 21,
      "net_profit_jp": "当期純利益",
      "net_profit": 10,
      "net_margin": 2.421,
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    },
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      "year": 1977,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 508,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 32,
      "net_profit_jp": "当期純利益",
      "net_profit": 16,
      "net_margin": 3.149,
      "employees": null,
      "reference": "会社年鑑（1986年版）"
    },
    {
      "year": 1978,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 560,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 31,
      "net_profit_jp": "当期純利益",
      "net_profit": 16,
      "net_margin": 2.857,
      "employees": null,
      "reference": "会社年鑑（1986年版）"
    },
    {
      "year": 1979,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 627,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 35,
      "net_profit_jp": "当期純利益",
      "net_profit": 17,
      "net_margin": 2.711,
      "employees": null,
      "reference": "会社年鑑（1986年版）"
    },
    {
      "year": 1980,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 698,
      "operating_profit_jp": null,
      "operating_profit": null,
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      "net_profit_jp": "当期純利益",
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    },
    {
      "year": 1981,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
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      "net_margin": 2.806,
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      "reference": "会社年鑑（1986年版）"
    },
    {
      "year": 1982,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
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      "net_margin": 2.798,
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      "reference": "会社年鑑（1986年版）"
    },
    {
      "year": 1983,
      "month": 3,
      "company_name": "日本オイルシール工業",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 815,
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      "operating_profit": null,
      "ordinary_profit_jp": "経常利益",
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      "operating_profit_jp": "営業利益",
      "operating_profit": 313,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 462,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 258,
      "net_margin": 3.78,
      "employees": 37613,
      "reference": null
    },
    {
      "year": 2023,
      "month": 3,
      "company_name": "NOK",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 7100,
      "operating_profit_jp": "営業利益",
      "operating_profit": 154,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 266,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 133,
      "net_margin": 1.873,
      "employees": 37913,
      "reference": null
    },
    {
      "year": 2024,
      "month": 3,
      "company_name": "NOK",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 7505,
      "operating_profit_jp": "営業利益",
      "operating_profit": 229,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 403,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 316,
      "net_margin": 4.21,
      "employees": 38097,
      "reference": null
    },
    {
      "year": 2025,
      "month": 3,
      "company_name": "NOK",
      "consolidation": "連結",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 7669,
      "operating_profit_jp": "営業利益",
      "operating_profit": 373,
      "ordinary_profit_jp": "経常利益",
      "ordinary_profit": 481,
      "net_profit_jp": "親会社株主に帰属する当期純利益",
      "net_profit": 303,
      "net_margin": 3.95,
      "employees": 37958,
      "reference": null
    }
  ]
}
