{
  "spec_version": "3",
  "endpoint": "decisions",
  "stock_code": "4063",
  "company_name": "信越化学工業",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/4063/",
  "api_url": "/api/4063/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/4063/",
  "count": 5,
  "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": "silicone-entry-1953",
      "url": "/tse/4063/decisions/silicone-entry-1953/",
      "api_url": "/api/4063/decisions/silicone-entry-1953.json",
      "year": 1953,
      "month": 1,
      "type": "new_business",
      "tags": [
        "bm-core-shift",
        "pf-diversify-related",
        "st-tech"
      ],
      "title": "米ゼネラル・エレクトリック社との技術提携によるシリコーンの事業化と、肥料中心の売上構成の入れ替え",
      "subtitle": "売上の8割を肥料が占める会社が、なぜ5年間ほとんど売上に寄与しない事業を抱え続けられたか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "shintec-pvc-world-top-vertical",
      "url": "/tse/4063/decisions/shintec-pvc-world-top-vertical/",
      "api_url": "/api/4063/decisions/shintec-pvc-world-top-vertical.json",
      "year": 1976,
      "month": 7,
      "type": "overseas",
      "tags": [
        "pf-vertical",
        "ma-crossborder-out"
      ],
      "title": "シンテックの完全子会社化と、テキサス立地を軸にした塩ビ垂直統合",
      "subtitle": "後発13位の米国塩ビ子会社を、なぜ立地と一貫生産だけで世界最大へ押し上げられたか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "semiconductor-silicon-independence-1979",
      "url": "/tse/4063/decisions/semiconductor-silicon-independence-1979/",
      "api_url": "/api/4063/decisions/semiconductor-silicon-independence-1979.json",
      "year": 1979,
      "month": null,
      "type": "capital",
      "tags": [
        "cp-crossholding",
        "st-tech",
        "st-capex"
      ],
      "title": "米ダウコーニング社との共同出資による信越半導体の設立と、優先交渉権を行使した全株式の取得",
      "subtitle": "技術も販路も相手と分け合って始めた事業を、なぜ12年後に丸ごと引き取れたのか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "kanagawa-full-production-1990",
      "url": "/tse/4063/decisions/kanagawa-full-production-1990/",
      "api_url": "/api/4063/decisions/kanagawa-full-production-1990.json",
      "year": 1990,
      "month": 8,
      "type": "transformation",
      "tags": [
        "gv-succession",
        "cp-finance",
        "st-lowcost"
      ],
      "title": "金川千尋の社長就任と「フル生産、全量販売」の全社展開",
      "subtitle": "シンテックで実証した「フル生産、全量販売」を、金川千尋社長はどう全事業へ広げ、無借金の規律とともに後継へ託したか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "succession-after-kanagawa-2016",
      "url": "/tse/4063/decisions/succession-after-kanagawa-2016/",
      "api_url": "/api/4063/decisions/succession-after-kanagawa-2016.json",
      "year": 2016,
      "month": 4,
      "type": "succession",
      "tags": [
        "gv-succession",
        "gl-expansion"
      ],
      "title": "森俊三氏への社長職の移譲と、シンテック社長を経た斉藤恭彦氏への二段階の承継",
      "subtitle": "後継者は育てられないと言い切った経営者が、なぜ試す場所を本社ではなく米国子会社に置いたのか",
      "status": "implemented",
      "status_label": "実施"
    }
  ],
  "by_type": [
    {
      "key": "capital",
      "count": 1,
      "url": "/api/4063/decisions/by-type/capital.json"
    },
    {
      "key": "new_business",
      "count": 1,
      "url": "/api/4063/decisions/by-type/new_business.json"
    },
    {
      "key": "overseas",
      "count": 1,
      "url": "/api/4063/decisions/by-type/overseas.json"
    },
    {
      "key": "succession",
      "count": 1,
      "url": "/api/4063/decisions/by-type/succession.json"
    },
    {
      "key": "transformation",
      "count": 1,
      "url": "/api/4063/decisions/by-type/transformation.json"
    }
  ],
  "by_decade": [
    {
      "key": "1950s",
      "count": 1,
      "url": "/api/4063/decisions/by-decade/1950s.json"
    },
    {
      "key": "1970s",
      "count": 2,
      "url": "/api/4063/decisions/by-decade/1970s.json"
    },
    {
      "key": "1990s",
      "count": 1,
      "url": "/api/4063/decisions/by-decade/1990s.json"
    },
    {
      "key": "2010s",
      "count": 1,
      "url": "/api/4063/decisions/by-decade/2010s.json"
    }
  ]
}