{ "spec_version": "5", "endpoint": "history", "stock_code": "6480", "company_name": "日本トムソン", "content_lang": "ja", "meta_lang": "en", "canonical_url": "https://the-shashi.com/tse/6480/decisions/", "api_url": "/api/6480/history.json", "updated": "2026-10-27", "license": "© 2026 Yutaka Sugiura. All rights reserved.", "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/6480/decisions/", "source": { "long_term": { "primary": [ "有価証券報告書" ], "extraction": "EDINET の XBRL、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": "日本トムソンの歴史概略", "eras": [ { "title": "大一工業の設立とニードルベアリングの生産開始", "start_year": 1950, "end_year": 1962, "phase": "founding" }, { "title": "「IKO」ブランドの確立と日本トムソンベアリングの吸収合併", "start_year": 1963, "end_year": 1977, "phase": "growth" }, { "title": "直動案内機器「リニアウェイ」の発売と武芸川製作所の設立", "start_year": 1978, "end_year": 2002, "phase": "growth" }, { "title": "ベトナム生産拠点の設立と中国ベアリング会社の買収", "start_year": 2003, "end_year": 2026, "phase": "maturity" } ], "long_term": [ { "year": 1950, "month": 3, "company_name": "6480", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, 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