EPO Patents = 1

Forward Citations = 0

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36 inventors (with patents filed for the assignee):

Haiping Zhang (5 out of 8 patents)

Lingchao Xuan (5 out of 5 patents)

Renlong Zhang (5 out of 5 patents)

4. Yanbin Zang (5 out of 5 patents)

5. Jiachang Wang (5 out of 5 patents)

6. Xiaodan Liu (4 out of 8 patents)

7. Lishuang Wang (4 out of 5 patents)

8. Mingguang Sun (4 out of 4 patents)

9. Guangjun Ma (3 out of 3 patents)

10. Xinghua Tao (3 out of 4 patents)

11. Yang Liu (1 out of 338 patents)

12. Ming Liu (1 out of 133 patents)

13. Jianhua Liu (1 out of 20 patents)

14. Dongqing Zhang (1 out of 2 patents)

15. Lanrong Ma (1 out of 2 patents)

7 patents: Sort by Forward Citations

1. 12480365 - State self-adaptive turbine type pulse generator and downhole drilling tool (2025-11-25),

2. 12129728 - Downhole blowout preventer and blowout prevention operation method (2024-10-29),

3. 12031410 - Well drilling tool and method for determining parameter thereof (2024-07-09),

4. 11952860 - Staged cementing device and staged cementing method (2024-04-09),

5. 11946342 - Drilling tool (2024-04-02),

6. 11920437 - Well drilling acceleration tool (2024-03-05),

7. 11898417 - Drilling speed increasing device (2024-02-13),

Sinopec Petroleum Engineering Technology Research Institute Co., Ltd. (SPERI) is a subsidiary of Sinopec, specializing in research and development in petroleum engineering technology. With a focus on innovation, SPERI plays a key role in advancing the technological capabilities of the oil and gas industry. Through partnerships and collaborations, SPERI is at the forefront of developing sustainable solutions for the energy sector.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 2 2025

7 Patents

#326 in Beijing

#3,390 in China

Beijing, China

Sinopec Petroleum Engineering Technology Research Institute Co., Ltd.