48 Utility and 6 Design Patents
#111 in Saitama 343-0827
#8,303 in Japan
#40,923 in the World
rank by utility patentsForward Citations = 798
Company Filing History:



4. 4 out of 229
Nippon Piston Ring Co., Ltd.
5. 4 out of 11
Nippon Itf, Inc
where one patent can have more than one assignee
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