{
  "spec_version": "3",
  "endpoint": "decisions",
  "stock_code": "4061",
  "company_name": "デンカ",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/4061/",
  "api_url": "/api/4061/decisions.json",
  "updated": "2026-08-05",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/4061/",
  "count": 4,
  "description": "Index of this company's management decisions. One decision = one endpoint: follow api_url for the full dossier (background, the decision itself, outcome, quoted primary sources and references).",
  "decisions": [
    {
      "slug": "chloroprene-domestic-1962",
      "url": "/tse/4061/decisions/chloroprene-domestic-1962/",
      "api_url": "/api/4061/decisions/chloroprene-domestic-1962.json",
      "year": 1962,
      "month": 6,
      "type": "new_business",
      "tags": [
        "st-tech",
        "pf-diversify-related"
      ],
      "title": "国産技術によるクロロプレンゴムの企業化と、丸善石油化学コンビナートへの参加",
      "subtitle": "カーバイドで登るか、石油へ移るか——野村與曾市 社長はなぜ1962年に二本の柱を同時に立てたか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "dpe-chloroprene-acquisition-2015",
      "url": "/tse/4061/decisions/dpe-chloroprene-acquisition-2015/",
      "api_url": "/api/4061/decisions/dpe-chloroprene-acquisition-2015.json",
      "year": 2015,
      "month": null,
      "type": "acquisition",
      "tags": [
        "ma-crossborder-out",
        "gl-entry",
        "gl-retreat"
      ],
      "title": "三井物産との共同出資によるDuPontのクロロプレンゴム事業の譲受と、米国DPEの設立",
      "subtitle": "青海一拠点で作り続けるか、北米に第2拠点を持つか——吉髙紳介 社長は元祖の設備をなぜ買ったか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "healthcare-covid-testkit-2020",
      "url": "/tse/4061/decisions/healthcare-covid-testkit-2020/",
      "api_url": "/api/4061/decisions/healthcare-covid-testkit-2020.json",
      "year": 2020,
      "month": 4,
      "type": "new_business",
      "tags": [
        "tr-crisis",
        "bm-core-shift"
      ],
      "title": "デンカ生研の本体統合と新型コロナ検査キットの量産化",
      "subtitle": "素材総合化学の傍流だった医薬事業を、山本学社長はなぜ事業戦略の中心へ引き上げたか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "cement-withdrawal-2022",
      "url": "/tse/4061/decisions/cement-withdrawal-2022/",
      "api_url": "/api/4061/decisions/cement-withdrawal-2022.json",
      "year": 2022,
      "month": 10,
      "type": "divestiture",
      "tags": [
        "pf-exit",
        "pf-focus"
      ],
      "title": "セメント事業からの撤退と、販売事業の太平洋セメントへの譲渡",
      "subtitle": "石灰石・カーバイド・セメントが一体で回る青海の連鎖を、今井俊夫 社長はなぜ外へ渡したか",
      "status": "implemented",
      "status_label": "実施"
    }
  ],
  "by_type": [
    {
      "key": "acquisition",
      "count": 1,
      "url": "/api/4061/decisions/by-type/acquisition.json"
    },
    {
      "key": "divestiture",
      "count": 1,
      "url": "/api/4061/decisions/by-type/divestiture.json"
    },
    {
      "key": "new_business",
      "count": 2,
      "url": "/api/4061/decisions/by-type/new_business.json"
    }
  ],
  "by_decade": [
    {
      "key": "1960s",
      "count": 1,
      "url": "/api/4061/decisions/by-decade/1960s.json"
    },
    {
      "key": "2010s",
      "count": 1,
      "url": "/api/4061/decisions/by-decade/2010s.json"
    },
    {
      "key": "2020s",
      "count": 2,
      "url": "/api/4061/decisions/by-decade/2020s.json"
    }
  ]
}