4 Utility Patents
#140 in Chongqing
#32,324 in China
Forward Citations = 2
Company Filing History:
Chongqing Institute of East China Normal University

Roi Optoelectronics Technology Co, Ltd.
4. 2 out of 4
Shanghai Langyan Optoelectronics Technology Co., Ltd.
where one patent can have more than one assignee
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