{
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  "stock_code": "1979",
  "company_name": "大気社",
  "content_lang": "ja",
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  "updated": "2026-08-17",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/1979/",
  "source": {
    "primary": [
      "有価証券報告書",
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    "extraction": "有価証券報告書の沿革を基礎に、社史・報道で補完",
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    {
      "date": "1913/4",
      "importance": 3,
      "event": "建材社を創立（初代社長 上西威）",
      "source": "大気社 公式サイト（沿革）"
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    {
      "date": "1949/7",
      "importance": 2,
      "event": "建材社を合資会社から株式会社に改組",
      "source": "有価証券報告書"
    },
    {
      "date": "1952/10",
      "importance": 3,
      "event": "塗装プラント事業を開始",
      "source": "有価証券報告書"
    },
    {
      "date": "1964/4",
      "importance": 1,
      "event": "大阪府枚方市に枚方実験室を開設",
      "source": "有価証券報告書"
    },
    {
      "date": "1971/6",
      "importance": 2,
      "event": "タイにThai Kenzaisha Co., Ltd.を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1973/4",
      "importance": 2,
      "event": "商号を大気社に変更",
      "source": "有価証券報告書"
    },
    {
      "date": "1974/10",
      "importance": 1,
      "event": "東京証券取引所市場第二部に上場",
      "source": "有価証券報告書"
    },
    {
      "date": "1980/9",
      "importance": 1,
      "event": "東京証券取引所市場第一部銘柄に指定",
      "source": "有価証券報告書"
    },
    {
      "date": "1981/6",
      "importance": 3,
      "event": "米国にTKS Industrial Companyを設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1991/1",
      "importance": 1,
      "event": "神奈川県愛川町に総合研究所を開設",
      "source": "有価証券報告書"
    },
    {
      "date": "1994/3",
      "importance": 1,
      "event": "中国に五洲大気社工程有限公司を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "1995/2",
      "importance": 1,
      "event": "インドにTaikisha Engineering India Pvt. Ltd.を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "2003/4",
      "importance": 2,
      "event": "環境設備、産業設備、塗装設備の三事業部制を導入",
      "source": "有価証券報告書"
    },
    {
      "date": "2007/4",
      "importance": 3,
      "event": "環境システム事業部、塗装システム事業部の二事業部制に再編",
      "source": "有価証券報告書"
    },
    {
      "date": "2014/6",
      "importance": 2,
      "event": "ENC Automation LLCの持分を取得",
      "source": "有価証券報告書"
    },
    {
      "date": "2019/2",
      "importance": 1,
      "event": "座間技術センターと枚方開発部門を統合しテクニカルセンターを開設",
      "source": "有価証券報告書"
    },
    {
      "date": "2020/7",
      "importance": 2,
      "event": "Nicomac Clean Rooms Far East LLPの持分を取得",
      "source": "有価証券報告書"
    },
    {
      "date": "2021/2",
      "importance": 2,
      "event": "ベジ・ファクトリーを設立",
      "source": "有価証券報告書"
    },
    {
      "date": "2022/4",
      "importance": 1,
      "event": "東京証券取引所プライム市場に移行",
      "source": "有価証券報告書"
    },
    {
      "date": "2023/4",
      "importance": 1,
      "event": "ハンガリーにTaikisha Hungary Kft.を設立",
      "source": "有価証券報告書"
    },
    {
      "date": "2024/6",
      "importance": 1,
      "event": "ドイツにTaikisha Deutschland GmbHを設立",
      "source": "有価証券報告書"
    }
  ]
}