Nagano, Japan

Tsubaki Seiko Inc.

Calculating rank
USPTO Granted Patents = 4

% Expired Patents = 100.0

Forward Citations = 15

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3 inventors (with patents filed for the assignee):

goldMedal Kimikazu Saito (3 out of 3 patents)

silverMedal Tetsushi Suzuki (3 out of 3 patents)

bronzeMedal Yukihiro Hanaoka (1 out of 53 patents)


4 patents:

Company Overview
Tsubaki Seiko is a leading manufacturer of power transmission components and systems. With a focus on innovation and quality, the company has established a global presence and is trusted by customers worldwide. Their range of products includes chains, sprockets, couplings, and more, catering to various industries such as automotive, aerospace, and food processing. Visit their website for more information on their products and services.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#105 in Nagano

#7,588 in Japan

Nagano, JP
Nagano, Japan
Forward Citations = 15

3 inventors:

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tsubaki Seiko Inc.. Retrieved from https://idiyas.com/company/tsubaki-seiko

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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