17 Utility Patents
#30 in Komaki
#45,314 in Japan
#210,427 in the World
Forward Citations = 10
Company Filing History:

Japan Communication Accessories Manufacturing Co., Ltd.
Sei Optifrontier Co., Ltd.
4. 4 out of 28

5. 3 out of 46
Sumitomo Electric Optifrontier Co., Ltd.
where one patent can have more than one assignee
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