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USPTO Data Jan 1 1976 - Oct 6 2026
1 Patents
#1,308 in Beijing, P.R.
#18,650 in China
Beijing Second Optical Instrumentfacotry
Forward Citations = 8
31 inventors:
Beijing Second Optical Instrumentfacotry
% Expired Patents = 100.0
Forward Citations = 8
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31 inventors (with patents filed for the assignee):
Lixin Wang (1 out of 21 patents)
Limin Yang (1 out of 6 patents)
Yufeng Liu (1 out of 13 patents)
4. Bingbing Wang (1 out of 2 patents)
5. Ying Zhao (1 out of 39 patents)
6. Xin Peng (1 out of 2 patents)
7. Su Zhou (1 out of 3 patents)
8. Zhi Peng Liu (1 out of 24 patents)
9. Qingbo Li (1 out of 2 patents)
10. Jinguang Wu (1 out of 1 patent)
11. Yuanfu Zhang (1 out of 1 patent)
12. Yizhuang Xu (1 out of 1 patent)
13. Shifu Weng (1 out of 1 patent)
14. Weijin Zhou (1 out of 1 patent)
15. Zhanlan Yang (1 out of 1 patent)
1 patent:
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Beijing Second Optical Instrumentfacotry. Retrieved from https://idiyas.com/company/beijing-second-optical-instrumentfacotry
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]