Forward Citations = 0

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19 inventors (with patents filed for the assignee):

Baojiang Sun (1 out of 25 patents)

Zhiyuan Wang (1 out of 3 patents)

Jintao Qi (1 out of 1 patent)

4. Liming Wei (1 out of 1 patent)

5. Gang Liu (1 out of 2 patents)

6. Xing Wang (1 out of 1 patent)

7. Long Ma (1 out of 1 patent)

8. Lei Chen (1 out of 1 patent)

9. Yuanlin Zhao (1 out of 1 patent)

10. Jiacui Luan (1 out of 1 patent)

11. Xiantao Meng (1 out of 1 patent)

12. Guodong Chen (1 out of 1 patent)

13. Qiang Huang (1 out of 1 patent)

14. Zisen Yang (1 out of 1 patent)

15. Hongyin Wei (1 out of 1 patent)

1 patent: Sort by Forward Citations

1. 12000222 - Pressure compensation device with accumulator group for controlled pressure drilling (2024-06-04),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

1 Patents

#201 in Tianjin

#18,808 in China

Tianjin, China

Cnpc Bohai Driling Engineering Company Limited

Forward Citations = 0

19 inventors:

Baojiang Sun (1 out of 25 patents)

Zhiyuan Wang (1 out of 3 patents)

Jintao Qi (1 out of 1 patent)

4. Liming Wei (1 out of 1 patent)

5. Gang Liu (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Cnpc Bohai Driling Engineering Company Limited. Retrieved from https://idiyas.com/company/cnpc-bohai-driling-engineering-company

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]