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USPTO Data Jan 1 1976 - Oct 20 2026
2 Patents
#4,372 in Tokyo
#11,139 in Japan
Nippon Pgm Co., Ltd.
Forward Citations = 1
4 inventors:
Nippon Pgm Co., Ltd.
% Expired Patents = 50.0
CIPO Patents = 1
EPO Patents = 1
Forward Citations = 1
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4 inventors (with patents filed for the assignee):
Masahiko Ogino (2 out of 2 patents)
Nobuyasu Ezawa (2 out of 14 patents)
Hiroshi Inoue (2 out of 75 patents)
4. Koji Yamada (2 out of 31 patents)
5. Hiroshi Inoue (0 patent)
6. Masahiko Ogino (0 patent)
7. Kenichi Tayama (0 patent)
8. Kazuma Takadate (0 patent)
9. Masahiko Ogino (0 patent)
10. Hiroshi c/o Kosaka Smelt& RefinCo Ltd Inoue (0 patent)
11. Nobuyasu c/o Tanaka Kikinzoku Kogyo KK Ezawa (0 patent)
2 patents:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nippon Pgm Co., Ltd.. Retrieved from https://idiyas.com/company/nippon-pgm-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]
1 patent (CIPO):
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]
1 patent (EPO):
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]