% Expired Patents = 66.7

EPO Patents = 1

Forward Citations = 6

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9 inventors (with patents filed for the assignee):

Hiroshi Harada (1 out of 70 patents)

Tomohide Kanzawa (1 out of 1 patent)

Eigo Yoshikawa (1 out of 1 patent)

4. Yasushi Fukazawa (1 out of 2 patents)

5. Hirohiko Okabe (1 out of 1 patent)

6. Shinsuke Miura (1 out of 16 patents)

7. Mitsuo Nakamura (1 out of 1 patent)

8. Koji Shigenobu (1 out of 1 patent)

9. Shunichi Yamada (1 out of 1 patent)

10. Koji Toshiba Materials Co Ltd Shigenobu (0 patent)

11. Shunichi Hakodate Sekonic Inc Yamada (0 patent)

12. Mitsuo Toshiba Materials Co Ltd Nakamura (0 patent)

3 patents: Sort by Forward Citations

#3,547 in Tokyo

#8,929 in Japan

Sekonic Corporation

Forward Citations = 6

9 inventors:

Hiroshi Harada (1 out of 70 patents)

Tomohide Kanzawa (1 out of 1 patent)

Eigo Yoshikawa (1 out of 1 patent)

4. Yasushi Fukazawa (1 out of 2 patents)

5. Hirohiko Okabe (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sekonic Corporation. Retrieved from https://idiyas.com/company/sekonic

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]

1 patent (EPO):

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]