YJ

Ya Jin

CL China Oilfield Services Limited: 1 patents #31 of 78Top 40%
Overall (All Time): #2,435,685 of 4,157,543Top 60%
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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