5 Utility Patents
#330 in Chigasaki
#162,524 in Japan
#826,892 in the World
Forward Citations = 59
Company Filing History:
Sei Optifrontier Co., Ltd.
Japan Communication Accessories Manufacturing Co., Ltd.
Sumitomo Electric Optifrontier Co., Ltd.
4. 1 out of 10,224

where one patent can have more than one assignee
Get your Inventor Badge Today