CIPO Patents = 1

Forward Citations = 6

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18 inventors (with patents filed for the assignee):

Demin Wang (3 out of 5 patents)

Rong Zhong (2 out of 2 patents)

Rongjie Zhu (2 out of 2 patents)

4. Yan Wang (2 out of 4 patents)

5. Yan Wang (1 out of 136 patents)

6. Quan Liu (1 out of 6 patents)

7. Jintang Liu (1 out of 1 patent)

8. Long Ren (1 out of 1 patent)

9. Hongyan Wang (1 out of 1 patent)

10. Jun Wan (1 out of 1 patent)

11. Shumin Zhang (1 out of 1 patent)

12. Xiuting Han (1 out of 1 patent)

13. Huanzhong Dong (1 out of 1 patent)

14. Jiamin Zhang (1 out of 1 patent)

15. Shuhua Wang (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 11180980 - Downhole oil, gas, water and sand separation method and separator (2021-11-23),

2. 8757257 - Crown-shaped separation device for separating oil and water in well (2014-06-24),

3. 8453726 - Corrugated settling cup and a multi-cup uniform flux gas anchor (2013-06-04),

4. 7635022 - Pumping system (2009-12-22),

Daqing Oilfield Company Limited is a leading oil and gas production company in China. As a subsidiary of China National Petroleum Corporation, it operates in Daqing, one of the largest oilfields in the country. With a strong focus on innovation and sustainability, the company is committed to providing safe and reliable energy solutions to meet the growing demands of the market.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 23 2025

4 Patents

#1 in Daqing Heilongjiang Province

#5,574 in China

Daqing Heilongjiang Province, China

Daqing Oilfield Company Limited