{ "spec_version": "4", "endpoint": "history", "stock_code": "6508", "company_name": "明電舎", "content_lang": "ja", "meta_lang": "en", "canonical_url": "https://the-shashi.com/tse/6508/decisions/", "api_url": "/api/6508/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/6508/decisions/", "source": { "long_term": { "primary": [ "会社年鑑 1986年版", "ダイヤモンド会社産業総覧 1964年版（半期合算）", "会社年鑑 1976年版（半期合算）", "会社年鑑 1971年版（半期合算）", "上場会社総覧 1956年版（半期合算）", "会社年鑑 1967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": "明電舎の歴史概略", "eras": [ { "title": "重宗芳水が始めた電気機械工場と、大崎工場の創設・株式会社化", "start_year": 1897, "end_year": 1934 }, { "title": "名古屋工場の創設と戦時、戦後の上場と西独AEGとの技術提携", "start_year": 1935, "end_year": 1960 }, { "title": "沼津工場とASEAとの提携、タイ進出と太田工場、本社の移転", "start_year": 1961, "end_year": 1999 }, { "title": "日立・富士電機との変電合弁と解消、大崎の本社ビルとインド・欧州企業の買収", "start_year": 2000, "end_year": 2026 } ], "summary": { "description": "明電舎の歴史。1897年、重宗芳水氏が東京・京橋で個人経営の電気機械工場として創業した重電メーカー。西独AEG社やスウェーデンASEA社との技術提携、日本AEパワーシステムズまでの沿革と経緯を執筆。" }, "long_term": [ { "year": 1950, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1951, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1952, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1953, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 38, "operating_profit_jp": "営業利益", "operating_profit": 7, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 5, "net_margin": 13.157, "employees": null, "reference": "上場会社総覧 1956年版（半期合算）" }, { "year": 1954, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 49, "operating_profit_jp": "営業利益", "operating_profit": 8, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 5, "net_margin": 10.204, "employees": null, "reference": "上場会社総覧 1956年版（半期合算）" }, { "year": 1955, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 54, "operating_profit_jp": "営業利益", "operating_profit": 6, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 3, "net_margin": 5.555, "employees": null, "reference": "上場会社総覧 1956年版（半期合算）" }, { "year": 1956, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1957, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 67, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 4, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "ダイヤモンド会社産業総覧 1964年版（半期合算）" }, { "year": 1958, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 89, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 7, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "ダイヤモンド会社産業総覧 1964年版（半期合算）" }, { "year": 1959, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 84, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 7, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "ダイヤモンド会社産業総覧 1964年版（半期合算）" }, { "year": 1960, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 100, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "ダイヤモンド会社産業総覧 1964年版（半期合算）" }, { "year": 1961, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 135, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 10, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "ダイヤモンド会社産業総覧 1964年版（半期合算）" }, { "year": 1962, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 182, "operating_profit_jp": "営業利益", "operating_profit": 23, "ordinary_profit_jp": "経常利益", "ordinary_profit": 14, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": "ダイヤモンド会社産業総覧 1964年版（半期合算）" }, { "year": 1963, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 202, "operating_profit_jp": "営業利益", "operating_profit": 25, "ordinary_profit_jp": "経常利益", "ordinary_profit": 16, "net_profit_jp": "当期純利益", "net_profit": 11, "net_margin": 5.445, "employees": 6736, "reference": "ダイヤモンド会社産業総覧 1964年版（半期合算）" }, { "year": 1964, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 159, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": -2, "net_margin": -1.258, "employees": null, "reference": "会社年鑑 1967年版（半期合算）" }, { "year": 1965, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 186, "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": -2.689, "employees": null, "reference": "会社年鑑 1967年版（半期合算）" }, { "year": 1966, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 179, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": -7, "net_margin": -3.911, "employees": null, "reference": "会社年鑑 1967年版（半期合算）" }, { "year": 1967, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 192, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": -7, "net_margin": -3.646, "employees": null, "reference": "会社年鑑 1971年版（半期合算）" }, { "year": 1968, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 252, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 14, "net_margin": 5.555, "employees": null, "reference": "会社年鑑 1971年版（半期合算）" }, { "year": 1969, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 310, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 8, "net_margin": 2.58, "employees": null, "reference": "会社年鑑 1971年版（半期合算）" }, { "year": 1970, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 364, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 7, "net_margin": 1.923, "employees": null, "reference": "会社年鑑 1971年版（半期合算）" }, { "year": 1971, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 425, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 10, "net_profit_jp": "当期純利益", "net_profit": 6, "net_margin": 1.411, "employees": null, "reference": "会社年鑑 1976年版（半期合算）" }, { "year": 1972, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 412, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 10, "net_profit_jp": "当期純利益", "net_profit": 5, "net_margin": 1.213, "employees": null, "reference": "会社年鑑 1976年版（半期合算）" }, { "year": 1973, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 436, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 12, "net_profit_jp": "当期純利益", "net_profit": 7, "net_margin": 1.605, "employees": null, "reference": "会社年鑑 1976年版（半期合算）" }, { "year": 1974, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 580, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 17, "net_profit_jp": "当期純利益", "net_profit": 9, "net_margin": 1.551, "employees": null, "reference": "会社年鑑 1976年版（半期合算）" }, { "year": 1975, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 654, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 15, "net_profit_jp": "当期純利益", "net_profit": 9, "net_margin": 1.376, "employees": null, "reference": "会社年鑑 1976年版（半期合算）" }, { "year": 1976, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 618, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 6, "net_profit_jp": "当期純利益", "net_profit": 8, "net_margin": 1.294, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1977, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 693, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 14, "net_profit_jp": "当期純利益", "net_profit": 6, "net_margin": 0.865, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1978, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 749, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 17, "net_profit_jp": "当期純利益", "net_profit": 8, "net_margin": 1.068, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1979, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 828, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 26, "net_profit_jp": "当期純利益", "net_profit": 12, "net_margin": 1.449, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1980, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 939, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 27, "net_profit_jp": "当期純利益", "net_profit": 14, "net_margin": 1.49, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1981, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1070, "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": 15, "net_margin": 1.401, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1982, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1156, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 26, "net_profit_jp": "当期純利益", "net_profit": 14, "net_margin": 1.211, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1983, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1084, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": -9, "net_profit_jp": "当期純利益", "net_profit": 0.16, "net_margin": 0.014, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1984, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1011, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": -5, "net_profit_jp": "当期純利益", "net_profit": 5, "net_margin": 0.494, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1985, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1131, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 18, "net_profit_jp": "当期純利益", "net_profit": 8, "net_margin": 0.707, "employees": null, "reference": "会社年鑑 1986年版" }, { "year": 1986, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1987, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1988, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1989, "month": 3, "company_name": "明電舎", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, 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