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USPTO Data Jan 1 1976 - Oct 27 2026
3 Patents
#54 in Okayama
#8,934 in Japan
Photochemical Co., Ltd.
Forward Citations = 18
6 inventors:
Photochemical Co., Ltd.
Calculating rank
% Expired Patents = 66.7
Forward Citations = 18
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6 inventors (with patents filed for the assignee):
Susumu Nakajima (3 out of 6 patents)
Isao Sakata (3 out of 6 patents)
Yoshinori Nakae (2 out of 2 patents)
4. Muneo Hikida (1 out of 1 patent)
5. Masahiko Mori (1 out of 1 patent)
6. Hiroyuki Takata (1 out of 3 patents)
3 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Photochemical Co., Ltd.. Retrieved from https://idiyas.com/company/photochemical-company
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]