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USPTO Data Jan 1 1976 - Oct 27 2026
2 Patents
#4 in Yamatokoriyama
#11,147 in Japan
Toho Kasei Ltd.
Forward Citations = 8
6 inventors:
Toho Kasei Ltd.
Calculating rank
% Expired Patents = 100.0
Forward Citations = 8
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6 inventors (with patents filed for the assignee):
Norio Maeda (2 out of 4 patents)
Takazo Sotojima (1 out of 10 patents)
Koji Sumi (1 out of 2 patents)
4. Hiroshi Aihara (1 out of 7 patents)
5. Masao Oono (1 out of 3 patents)
6. Naoaki Izu Tani (1 out of 1 patent)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Toho Kasei Ltd.. Retrieved from https://idiyas.com/company/toho-kasei
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]