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USPTO Data Jan 1 1976 - Oct 20 2026
2 Patents
#4,372 in Tokyo
#11,139 in Japan
Sumitomo Metal Corporation
Forward Citations = 4
9 inventors:
Sumitomo Metal Corporation
Forward Citations = 4
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9 inventors (with patents filed for the assignee):
Riki Okamoto (1 out of 55 patents)
Kunio Hayashi (1 out of 58 patents)
Kohichi Sano (1 out of 34 patents)
4. Koichi Sato (1 out of 149 patents)
5. Nobuhiro Fujita (1 out of 52 patents)
6. Masaaki Mizumura (1 out of 27 patents)
7. Yukihisa Kuriyama (1 out of 22 patents)
8. Kazuaki Nakano (1 out of 15 patents)
9. Manabu Wada (1 out of 20 patents)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sumitomo Metal Corporation. Retrieved from https://idiyas.com/company/sumitomo-metal
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]