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USPTO Data Jan 1 1976 - Oct 27 2026
1 Patents
#6,105 in Tokyo
#15,762 in Japan
Seikan Group Holdings, Ltd.
Forward Citations = 0
6 inventors:
Seikan Group Holdings, Ltd.
Calculating rank
Forward Citations = 0
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6 inventors (with patents filed for the assignee):
Kazumi Ozawa (1 out of 6 patents)
Takahiro Yasuumi (1 out of 5 patents)
Kouji Kuriyama (1 out of 3 patents)
4. Yousuke Morita (1 out of 2 patents)
5. Yasushi Hatano (1 out of 12 patents)
6. Yoshihiro Ootani (1 out of 1 patent)
1 patent:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Seikan Group Holdings, Ltd.. Retrieved from https://idiyas.com/company/seikan-group-holdings
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]