% Expired Patents = 100.0

Forward Citations = 0

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3 inventors (with patents filed for the assignee):

Yasuo Kinoshita (1 out of 19 patents)

Yoshihiro Umebayashi (1 out of 3 patents)

Masahiko Higuchi (1 out of 2 patents)

1 patent: Sort by Forward Citations

1. 7392680 - Rolling die and method for forming thread or worm and spline having small number of teeth by rolling simultaneously (2008-07-01),

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USPTO Data Jan 1 1976 - Oct 20 2026

1 Patents

#6,102 in Tokyo

#15,759 in Japan

Tokyo, Japan

Hayashi Precision Co. Ltd

Forward Citations = 0

3 inventors:

Yasuo Kinoshita (1 out of 19 patents)

Yoshihiro Umebayashi (1 out of 3 patents)

Masahiko Higuchi (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hayashi Precision Co. Ltd. Retrieved from https://idiyas.com/company/hayashi-precision-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]