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Dongying, China

Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Co., Ltd.

USPTO Granted Patents = 5

Forward Citations = 0

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55 inventors (with patents filed for the assignee):

Hui Zhang (2 out of 9 patents)

Yong Chen (2 out of 3 patents)

Songling Huang (1 out of 15 patents)

4. Wei Zhao (1 out of 84 patents)

5. Shen Wang (1 out of 14 patents)

6. Wenbo Li (1 out of 163 patents)

7. Huanquan Sun (1 out of 2 patents)

8. Laiju Han (1 out of 1 patent)

9. Shihua Zhang (1 out of 1 patent)

10. Yongtai Sun (1 out of 1 patent)

11. Kai Gao (1 out of 5 patents)

12. Hui Li (1 out of 3 patents)

13. Rui Zhang (1 out of 2 patents)

14. Bingxiang Sun (1 out of 1 patent)

15. Xizhou Wang (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 12480372 - Positioning and orientating apparatus for branch well, and positioning and orientating method (2025-11-25),

2. 12291668 - Coated rubber particle, its preparation and application thereof (2025-05-06),

3. 12049792 - Double-channel fluid injection apparatus (2024-07-30),

4. 11946334 - Flow splitting device for gas reverse circulation drilling (2024-04-02),

5. 10048226 - Imaging method and apparatus based on magnetic flux leakage testing (2018-08-14),

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USPTO Data Jan 1 1976 - Dec 9 2025

5 Patents

#2 in Dongying

#4,548 in China

Dongying, China

Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Co., Ltd.

Forward Citations = 0

55 inventors:

Hui Zhang (2 out of 9 patents)

Yong Chen (2 out of 3 patents)

Songling Huang (1 out of 15 patents)

4. Wei Zhao (1 out of 84 patents)

5. Shen Wang (1 out of 14 patents)

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