18 Utility Patents
#2,727 in Yokohama
#41,371 in Japan
#190,655 in the World
Forward Citations = 111
Company Filing History:

Sumitomo Electric Optifrontier Co., Ltd.
where one patent can have more than one assignee
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#2,727 in Yokohama
#41,371 in Japan
#190,655 in the World
Company Filing History:

Get your Inventor Badge Today