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興研株式会社

Tokyo, Japan

Active
Registration numberT3010001016132
TypeCorporation
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 number3010001016132
Corporate number assigned on2015-10-05
Invoice registered on2023-10-01

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 typeKabushiki 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 code102-0081

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 linesE:製造業
Employees431 (male 263 / female 174)
Capital¥674.3M
Incorporated1963-12-12
Websitewww.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).

Browse the awards database →

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 →

Doing due diligence on this supplier?

Verifying the invoice number is step one. Our guide covers the full checklist: corporate registry, licenses, and import/export standing.

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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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