44 Utility and 6 Design Patents
#136 in Shizuoka
#10,057 in Japan
#48,598 in the World
rank by utility patentsForward Citations = 1,090
Company Filing History:



4. 2 out of 227
Nihon Plast Co., Ltd.
5. 2 out of 67
Teikoku Piston Ring Co., Ltd.
where one patent can have more than one assignee
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