7 Utility Patents
#9,023 in Kanagawa
#121,317 in Japan
#594,871 in the World
Forward Citations = 2
Company Filing History:
Sumitomo Electric Optifrontier Co., Ltd.

where one patent can have more than one assignee
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#9,023 in Kanagawa
#121,317 in Japan
#594,871 in the World
Company Filing History:

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