Tokyo, Japan

Tokyo Keiki Inc.


USPTO Granted Patents = 15

% Expired Patents = 20.0


Trademarks = 1

Forward Citations = 21

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41 inventors (with patents filed for the assignee):

goldMedal Kenji Tsuchiya (3 out of 60 patents)

silverMedal Takao Murakoshi (3 out of 9 patents)

bronzeMedal Tooru Kikuchi (2 out of 6 patents)

4.  Satoshi Ito (2 out of 110 patents)

5.  Takayuki Ushikubo (2 out of 2 patents)

6.  Shunichi Hirano (2 out of 2 patents)

7.  Hajime Tamura (2 out of 27 patents)

8.  Hiroomi Arakane (2 out of 3 patents)

9.  Takao Sagawa (2 out of 3 patents)

10.  Nobuyuki Okamura (2 out of 11 patents)

11.  Hiroaki Saito (1 out of 44 patents)

12.  Kazuhito Kishida (1 out of 9 patents)

13.  Takashi Koyama (1 out of 117 patents)

14.  Kazushi Kaneko (1 out of 34 patents)

15.  Yohei Ishida (1 out of 10 patents)


15 patents:

Company Overview
Tokyo Keiki Inc. is a prominent Japanese company specializing in precision instruments and control systems. The organization develops a diverse range of products, including hydraulic equipment, measuring instruments, and industrial automation solutions. With a strong emphasis on innovation, Tokyo Keiki focuses on advanced technologies in sectors such as aerospace, defense, and energy. The company is committed to enhancing operational efficiency and safety through its cutting-edge engineering and manufacturing capabilities.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 6 2026

15 Patents

#1,540 in Tokyo

#3,442 in Japan

#39,881 in the World

Tokyo, JP
Tokyo, Japan
Forward Citations = 21

41 inventors:

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tokyo Keiki Inc.. Retrieved from https://idiyas.com/company/tokyo-keiki

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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