3 Utility Patents
#6,514 in Shanghai
#42,749 in China
Forward Citations = 2
Company Filing History:
Chongqing Institute of East China Normal University

Shanghai Langyan Optoelectronics Technology Co., Ltd.
4. 1 out of 21
Roi Optoelectronics Technology Co, Ltd.
where one patent can have more than one assignee
Get your Inventor Badge Today