Company Badge
USPTO Data Jan 1 1976 - Dec 23 2025
1 Patents
#5,735 in Tokyo
#15,539 in Japan
Piston Ring Company, Ltd.
Forward Citations = 63
4 inventors:
Piston Ring Company, Ltd.
Forward Citations = 63
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4 inventors (with patents filed for the assignee):
Masahiro Oguchi (1 out of 10 patents)
Katsumasa Odera (1 out of 9 patents)
Akihisa Inoe (1 out of 1 patent)
4. Tsuyoshi Masumoto (1 out of 49 patents)
1 patent:
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