4 Utility and 1 Design Patents
#9,757 in Yokohama
#193,296 in Japan
rank by utility patentsForward Citations = 1
Company Filing History:
Sei Optifrontier Co., Ltd.
Sumitomo Electric Optifrontier Co., Ltd.
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#9,757 in Yokohama
#193,296 in Japan
rank by utility patentsCompany Filing History:
Get your Inventor Badge Today