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USPTO Data Jan 1 1976 - Oct 27 2026
1 Patents
#1,658 in Osaka
#15,762 in Japan
Sumitomo Chem.co., Ltd.
Forward Citations = 0
7 inventors:
Sumitomo Chem.co., Ltd.
Calculating rank
Forward Citations = 0
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7 inventors (with patents filed for the assignee):
Hiroyuki Kai (1 out of 48 patents)
Moriyasu Masui (1 out of 30 patents)
Akihiko Nakamura (1 out of 15 patents)
4. Akira Takase (1 out of 27 patents)
5. Yujiro Kiyoshima (1 out of 6 patents)
6. Mikio Sasaki (1 out of 6 patents)
7. Katuhisa Masumoto (1 out of 6 patents)
1 patent:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sumitomo Chem.co., Ltd.. Retrieved from https://idiyas.com/company/sumitomo-chemco
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]