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USPTO Data Jan 1 1976 - Oct 27 2026
2 Patents
#4,375 in Tokyo
#11,147 in Japan
Tnk Corporation Ltd.
Forward Citations = 1
2 inventors:
Tnk Corporation Ltd.
Calculating rank
% Expired Patents = 100.0
EPO Patents = 1
Forward Citations = 1
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2 inventors (with patents filed for the assignee):
Nobuyuki Tanaka (2 out of 41 patents)
Kazuo Mishina (1 out of 2 patents)
Kenichi Tanaka (68 patents)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tnk Corporation Ltd.. Retrieved from https://idiyas.com/company/tnk
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]
1 patent (EPO):
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]