% Expired Patents = 100.0

Forward Citations = 4

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6 inventors (with patents filed for the assignee):

Yoshinori Nishiki (1 out of 86 patents)

Masaaki Kato (1 out of 26 patents)

Teruo Haibara (1 out of 12 patents)

4. Tsuneto Furuta (1 out of 20 patents)

5. Kenichi Uemura (1 out of 2 patents)

6. Kuniaki Yamada (1 out of 5 patents)

1 patent: Sort by Forward Citations

#543 in Kanagawa

#15,732 in Japan

Puretron Ltd.

Forward Citations = 4

6 inventors:

Yoshinori Nishiki (1 out of 86 patents)

Masaaki Kato (1 out of 26 patents)

Teruo Haibara (1 out of 12 patents)

4. Tsuneto Furuta (1 out of 20 patents)

5. Kenichi Uemura (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Puretron Ltd.. Retrieved from https://idiyas.com/company/puretron

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]