% Expired Patents = 100.0

Forward Citations = 0

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5 inventors (with patents filed for the assignee):

Masaaki Matsuoka (1 out of 38 patents)

Sadakazu Aiso (1 out of 7 patents)

Marina Yamada (1 out of 1 patent)

4. Tomohiro Chiba (1 out of 2 patents)

5. Kenzo Terashita (1 out of 2 patents)

1 patent: Sort by Forward Citations

#6,094 in Tokyo

#15,745 in Japan

Marina Yamada

Forward Citations = 0

5 inventors:

Masaaki Matsuoka (1 out of 38 patents)

Sadakazu Aiso (1 out of 7 patents)

Marina Yamada (1 out of 1 patent)

4. Tomohiro Chiba (1 out of 2 patents)

5. Kenzo Terashita (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Marina Yamada. Retrieved from https://idiyas.com/company/marina-yamada

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]