46 Utility Patents
#727 in Yokohama
#9,168 in Japan
#44,690 in the World
Forward Citations = 272
Company Filing History:

Sumitomo Electric Optifrontier Co., Ltd.
where one patent can have more than one assignee
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#727 in Yokohama
#9,168 in Japan
#44,690 in the World
Company Filing History:

Get your Inventor Badge Today