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USPTO Data Jan 1 1976 - Oct 20 2026
2 Patents
#1 in Noboribetsu
#11,139 in Japan
Sanwakogyo Ltd.
Forward Citations = 2
4 inventors:
Sanwakogyo Ltd.
% Expired Patents = 100.0
Forward Citations = 2
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4 inventors (with patents filed for the assignee):
Shinji Tanaka (2 out of 7 patents)
Hirokazu Madarame (2 out of 3 patents)
Toshifumi Nakajima (2 out of 20 patents)
4. Kazuhiro Miyagi (2 out of 2 patents)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sanwakogyo Ltd.. Retrieved from https://idiyas.com/company/sanwakogyo
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]