51 Utility and 2 Design Patents
#216 in Shanghai
#1,573 in China
#36,552 in the World
rank by utility patentsForward Citations = 911
Company Filing History:

Tongji University

4. 6 out of 6
Shanghai North Ocean Photonics Co., Ltd.
5. 6 out of 8
Redrock Semiconductor, Inc.
where one patent can have more than one assignee
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