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USPTO Data Jan 1 1976 - Oct 20 2026
1 Patents
#6,102 in Tokyo
#15,759 in Japan
Showa Shell Sekiku K.k.
Forward Citations = 13
3 inventors:
Showa Shell Sekiku K.k.
Calculating rank
Forward Citations = 13
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3 inventors (with patents filed for the assignee):
Takahisa Kase (1 out of 5 patents)
Tetsuro Nii (1 out of 3 patents)
Porponth Sichanugrist (1 out of 6 patents)
1 patent:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Showa Shell Sekiku K.k.. Retrieved from https://idiyas.com/company/showa-shell-sekiku-k-k
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]