Partial year: Data through Q3 2025 (Sept 30). Full-year totals not yet available.
YJ

Ya Jin

CL China Oilfield Services Limited: 1 patents #8 of 27Top 30%
Overall (2025): #167,127 of 469,880Top 40%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12359519 Coring and sampling integrated sub and downhole instrument Yongren Feng, Tao-Cheng Lu, Lin Huang, Shusheng Guo, Xiaodong Chu +8 more 2025-07-15