Company Badge
USPTO Data Jan 1 1976 - Nov 10 2026
4 Patents
#1 in Daqing
#6,473 in China
Daqing Oilfield Company Limited
Forward Citations = 6
18 inventors:
Daqing Oilfield Company Limited
Calculating rank
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 152 patents)
6. Quan Liu (1 out of 7 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:
Company Overview
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.
Profile summary synthesized from public USPTO records and patent filings.
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Daqing Oilfield Company Limited. Retrieved from https://idiyas.com/company/daqing-oilfield-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]
1 patent (CIPO):
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]