31 Utility Patents
#38 in Himeji
#18,488 in Japan
#86,537 in the World
Forward Citations = 40
Company Filing History:
Sanyo Special Steel Co., Ltd.
Fine Sinter Co., Ltd

4. 2 out of 21,592

5. 1 out of 229
Nippon Piston Ring Co., Ltd.
where one patent can have more than one assignee
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