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USPTO Data Jan 1 1976 - Oct 27 2026
2 Patents
#4,374 in Tokyo
#11,143 in Japan
Keishin Matsumoto
Forward Citations = 3
6 inventors:
Keishin Matsumoto
Calculating rank
Forward Citations = 3
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6 inventors (with patents filed for the assignee):
Katsuji Marumoto (1 out of 28 patents)
Takanori Shibata (1 out of 4 patents)
Shinichi Ikari (1 out of 2 patents)
4. Takumi Hayakawa (1 out of 1 patent)
5. Fumito Imai (1 out of 1 patent)
6. Yozo Kamikawa (1 out of 1 patent)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Keishin Matsumoto. Retrieved from https://idiyas.com/company/keishin-matsumoto
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]
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]
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]