Tokyo Metropolitan

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Forward Citations = 25

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11 inventors (with patents filed for the assignee):

Seiji Yamaguchi (1 out of 8 patents)

Tomoyuki Hayashi (1 out of 1 patent)

Kozaburo Akamatus (1 out of 1 patent)

4. Noboru Okazaki (1 out of 1 patent)

5. Tamotsu Hattori (1 out of 1 patent)

6. Makoto Thogho (1 out of 1 patent)

7. Tomohiko Kusumi (1 out of 1 patent)

8. Takeshi Yamaura (1 out of 1 patent)

9. Takatsugu Ogata (1 out of 1 patent)

10. Tsutomu Suzuki (1 out of 2 patents)

11. Ikuo Arai (1 out of 1 patent)

2 patents: Sort by Forward Citations

#4,379 in Tokyo

#11,154 in Japan

Forward Citations = 25

11 inventors:

Seiji Yamaguchi (1 out of 8 patents)

Tomoyuki Hayashi (1 out of 1 patent)

Kozaburo Akamatus (1 out of 1 patent)

4. Noboru Okazaki (1 out of 1 patent)

5. Tamotsu Hattori (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tokyo Metropolitan. Retrieved from https://idiyas.com/company/tokyo-metropolitan

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]