% Expired Patents = 100.0

Forward Citations = 1

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10 inventors (with patents filed for the assignee):

Yasushi Okada (1 out of 8 patents)

Mitsuru Fukushima (1 out of 9 patents)

Yoshiroh Someya (1 out of 3 patents)

4. Kohji Kanbara (1 out of 3 patents)

5. Noriko Asami (1 out of 1 patent)

6. Toshimichi Ooura (1 out of 1 patent)

7. Shinji Usami (1 out of 1 patent)

8. Mamoru Murata (1 out of 1 patent)

9. Kenichi Maekawa (1 out of 1 patent)

10. Junichi Ota (1 out of 3 patents)

1 patent: Sort by Forward Citations

#6,094 in Tokyo

#15,745 in Japan

Osk Co., Ltd.

Forward Citations = 1

10 inventors:

Yasushi Okada (1 out of 8 patents)

Mitsuru Fukushima (1 out of 9 patents)

Yoshiroh Someya (1 out of 3 patents)

4. Kohji Kanbara (1 out of 3 patents)

5. Noriko Asami (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Osk Co., Ltd.. Retrieved from https://idiyas.com/company/osk-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]