{ "spec_version": "5", "endpoint": "history", "stock_code": "4097", "company_name": "高圧ガス工業", "content_lang": "ja", "meta_lang": "en", "canonical_url": "https://the-shashi.com/tse/4097/decisions/", "api_url": "/api/4097/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/4097/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": "高圧ガス工業の歴史概略", "eras": [ { "title": "中部ガス産業の設立と大阪証券取引所第二部への上場", "start_year": 1958, "end_year": 1963, "phase": "founding" }, { "title": "播磨・広島・神奈川工場の新設と東証・大証一部への指定替え", "start_year": 1964, "end_year": 1979, "phase": "growth" }, { "title": "宇野酸素・中国酸素の買収と滋賀高圧ガス流通センターの新設", "start_year": 1980, "end_year": 2010, "phase": "growth" }, { "title": "スズカファインの買収と西日本高圧瓦斯ほかの子会社化", "start_year": 2011, "end_year": 2026, "phase": "maturity" } ], "long_term": [ { "year": 1950, "month": 3, "company_name": "4097", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, 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