3 Utility and 2 Design Patents
#11,898 in Osaka
#236,990 in Japan
rank by utility patentsForward Citations = 31
Company Filing History:
Sei Optifrontier Co., Ltd.


where one patent can have more than one assignee
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#11,898 in Osaka
#236,990 in Japan
rank by utility patentsCompany Filing History:


Get your Inventor Badge Today