大井電気株式会社

Kanagawa, Japan

Active

Registration number	`T2020001019746`
Type	Corporation
Registered name	大井電気株式会社
Address	神奈川県横浜市港北区菊名７丁目３番１６号 7-3-16 Kikuna, Yokohama-shi Kohoku-ku, Kanagawa 222-0011, JAPAN
Corporate number	`2020001019746`
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　　石田　甲
Reading (furigana)	オオイデンキ
Reading (romaji)	Ooidenki
English name (unofficial)	Oiji Electric
Postal code	222-0011

Source: NTA Corporate Number Publication Site, refreshed daily. Representative: gBizINFO (METI, monthly).

Company profile (gBizINFO)

Business summary	情報伝送機器・監視制御装置・通信ネットワーク関連機・移動体通信機器・計測器の設計・開発・製造及び販売
Business lines	E:製造業
Employees	407 （male 349 / female 58）
Capital	¥2.71B
Incorporated	1950-01-07
Website	corporate.ooi.co.jp/sustainability/social

Source: gBizINFO (METI), refreshed monthly — edited extract by LoreaTec. Figures are as filed by each company.

Government contract awards (GEPS)

25 national government awards on record between 2017-06-05 and 2026-04-07.

2026-04-07	灯火監視装置（KUDー１C）48式ほか5点買入
2026-03-31	灯火監視制御装置（EZD-1）36式ほか1点買入
2026-03-06	灯火監視装置（KUD-1C）58式ほか3点買入
2025-06-26	【海上保安庁　特機1134】灯火監視装置（KUD-1C）72式ほか5点買入
2024-07-12	特定小電力型監視装置（KUD-2C)82式ほか5点買入

Full award history on Japan Tenders →

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 2 programmes (5 lines, sheet years 2024–2025; total ¥321.7M).

2025 FY2024	航路標識整備事業 ¥138.7M （国土交通省　海上保安庁）【民間事業者】当庁が発注した機器製造等
2024 FY2023	航路標識整備事業 ¥143.8M （国土交通省　海上保安庁）【民間事業者】当庁が発注した機器製造、買入等
2024 FY2023	警察移動無線通信システムの更新・統合 ¥33.0M （警察庁）警察移動無線通信システムの更新・統合に必要な整備工事等の実施
2024 FY2023	航路標識整備事業 ¥5.0M （国土交通省　海上保安庁）【民間事業者】当庁が発注した工事等
2024 FY2023	航路標識整備事業 ¥1.2M （国土交通省　海上保安庁）【民間事業者】当庁が発注した機器製造、買入等

Contract details (excerpt): 航路標識用機器買入 ¥128.7M・一般競争契約（最低価格） · bidders 1 ／航路標識用機器買入 ¥10.0M・一般競争契約（最低価格） · bidders 1 ／航路標識用機器買入 ¥143.8M・一般競争契約（最低価格） · bidders 1 ／伝送制御装置（１）外２件購入 ¥33.0M・一般競争契約（最低価格） · bidders 1 ／航路標識用機器買入等（14件） ¥5.0M・随意契約（少額）／航路標識用機器買入 ¥1.2M・随意契約（その他）

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 →

Licenses, registrations & certifications (gBizINFO)

2023-03-27	Government bidding qualification (統一資格) 企業／施設課経理係（Ministry of Justice）
2021-04-01	Government bidding qualification (統一資格) 企業／施設課経理係（Ministry of Justice）
2019-04-01	Government bidding qualification (統一資格) 企業／施設課経理係（Ministry of Justice）

Source: gBizINFO (METI) notifications & certifications dataset, refreshed monthly. Some licenses (e.g. construction 建設業許可, electrician registrations) are not part of the gBizINFO dataset.

Radio equipment approvals (技適)

610 radio type approvals (技適 / construction design certifications) are on record under this company's brand.

大井電気株式会社 (610)

Source: MIC radio-use portal (public notice of technical conformity certifications) — edited extract by LoreaTec. Exact legal-name matches only. Giteki database →

Verify in official sources

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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/t2020001019746) — Source: National Tax Agency corporate-number and qualified-invoice registries. Retrieved 2026-09-24.

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