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For the Inventor, By the Inventor

Tokyo, Japan

Tomy Seiko Co., Ltd.

Calculating rank
USPTO Granted Patents = 9

Trademarks = 1

Forward Citations = 120

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10 inventors (with patents filed for the assignee):

goldMedal Kenji Tominaga (3 out of 15 patents)

silverMedal Masatoshi Fujishiro (3 out of 3 patents)

bronzeMedal Akio Togashi (2 out of 2 patents)

4.  Youichiro Tani (2 out of 2 patents)

5.  Takamaro Ishii (2 out of 2 patents)

6.  Teruo Okada (1 out of 1 patent)

7.  Masahiko Inagaki (1 out of 1 patent)

8.  Souichirou Matsushima (1 out of 1 patent)

9.  Masami Toyama (1 out of 5 patents)

10.  Michihiro Ota (1 out of 1 patent)


9 patents:

1. 6149571 - Centrifuge having a rotor with convex surface matching concave surface (2000-11-21),
2. 6045494 - Centrifugal separating method and centrifugal machine (2000-04-04),
3. 5834303 - Method and device for extraction and purification of DNA (1998-11-10),
4. 5824224 - Process and apparatus for the extraction and purification of DNA (1998-10-20),
5. 5645723 - Process and apparatus for the extraction and purification of DNA (1997-07-08),
6. D347696 - Sterilizer (1994-06-07),
7. D335930 - Centrifuge (1993-05-25),
8. 4941867 - Container rotor for a centrifugal separator (1990-07-17),
9. D303147 - Small type micro centrifuge (1989-08-29),
Company Overview
Tomy Seiko Co., Ltd. is a leading manufacturer of precision equipment and tools for the automotive industry. With a strong focus on quality and innovation, the company provides a wide range of products including torque wrenches, screwdrivers, and pneumatic tools. Tomy Seiko is committed to delivering reliable solutions that meet the needs of its customers worldwide.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

9 Patents

#2,022 in Tokyo

#4,706 in Japan

Tokyo, JP
Tokyo, Japan

Tomy Seiko Co., Ltd.

Forward Citations = 120

10 inventors:

goldMedal Kenji Tominaga (3 out of 15 patents)

silverMedal Masatoshi Fujishiro (3 out of 3 patents)

bronzeMedal Akio Togashi (2 out of 2 patents)

4.  Youichiro Tani (2 out of 2 patents)

5.  Takamaro Ishii (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tomy Seiko Co., Ltd.. Retrieved from https://idiyas.com/company/tomy-seiko-company

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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