興研株式会社
Tokyo, Japan
Active| Registration number | T3010001016132 |
|---|---|
| Type | Corporation |
| Registered name | 興研株式会社 |
| Address | 東京都千代田区四番町7番地 7 Yombancho, Chiyoda-ku, Tokyo 102-0081, JAPAN |
| Corporate number | 3010001016132 |
| Corporate number assigned on | 2015-10-05 |
| Invoice registered on | 2023-10-01 |
The invoice registration date is when the qualified-invoice-issuer registration (T-number) took effect — it is not the date the company was founded, and it resets only if the business re-registers after revocation or expiry.
Corporate registry record
| Entity type | Kabushiki Kaisha (stock company) |
|---|---|
| Representative | 代表取締役社長 村川 勉 |
| Reading (furigana) | コウケン |
| Reading (romaji) | Koken |
| English name (unofficial) | Koken K.K. |
| Postal code | 102-0081 |
Source: NTA Corporate Number Publication Site, refreshed daily. Representative: gBizINFO (METI, monthly).
Company profile (gBizINFO)
| Business summary | オープンクリーンシステム、労働安全衛生保護具の製造販売他 |
|---|---|
| Business lines | E:製造業 |
| Employees | 431 (male 263 / female 174) |
| Capital | ¥674.3M |
| Incorporated | 1963-12-12 |
| Website | www.koken-ltd.co.jp/ |
Source: gBizINFO (METI), refreshed monthly — edited extract by LoreaTec. Figures are as filed by each company.
Government contract awards (GEPS)
No public national-government (GEPS) award records for this company in the open data (FY2013 to date).
出典:調達ポータル(https://www.p-portal.go.jp/)
Payments from national budget programmes (行政事業レビュー)
Ministry review sheets report this company as a payee of 3 programmes (6 lines, sheet years 2024–2025; total ¥1.83B).
| 2025 FY2024 | 乙類(化学器材) ¥775.2M (防衛省) 化学器材の調達先企業である。 |
|---|---|
| 2025 FY2024 | 諸器材等維持費等(陸自) ¥156.4M (防衛省) 再設計役務等 |
| 2025 FY2024 | 遺棄化学兵器廃棄処理事業経費 ¥85.9M (内閣府) 資機材調達経費 |
| 2024 FY2023 | 乙類(化学器材) ¥657.3M (防衛省) 化学器材の調達先企業である。 |
| 2024 FY2023 | 諸器材等維持費等(陸自) ¥103.0M (防衛省) 各種器材の修理、整備用部品の取得等 |
| 2024 FY2023 | 遺棄化学兵器廃棄処理事業経費 ¥54.7M (内閣府) 資機材等調達経費 |
Contract details (excerpt): 18式個人用防護装備防護マスク ¥690.7M・随意契約(公募) · bidders 1 / 18式個人用防護装備防護マスク ¥84.4M・随意契約(公募) · bidders 1 / 18式特殊型防護マスク等の購入 ¥72.1M・随意契約(その他) · bidders 1 / 呼気室カバー、ポリアリレート、OD色ほか10件 ¥56.8M・随意契約(公募) · bidders 1 / 隔障ほか10件 ¥30.8M・随意契約(公募) · bidders 1 / 専用眼鏡 ¥23.0M・随意契約(公募) · bidders 1
Source: 行政事業レビュー見える化サイト (Cabinet Secretariat, PDL 1.0) — edited extract by LoreaTec. A sheet year describes the previous fiscal year’s spending. Programme database →
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How to cite this page
Data via LoreaTec BizSearch (https://bizsearch.loreatec.jp/t3010001016132) — Source: National Tax Agency corporate-number and qualified-invoice registries. Retrieved 2026-09-21.
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