20 Utility Patents
#2,430 in Yokohama
#36,559 in Japan
#168,887 in the World
Forward Citations = 295
Company Filing History:


Nihon Koken Kogyo Co.
where one patent can have more than one assignee
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#2,430 in Yokohama
#36,559 in Japan
#168,887 in the World
Company Filing History:


Get your Inventor Badge Today