YF

Yongren Feng

CL China Oilfield Services Limited: 3 patents #1 of 21Top 5%
CO China National Offshore Oil: 1 patents #1 of 20Top 5%
Overall (2023): #54,673 of 537,848Top 15%
3
Patents 2023

Issued Patents 2023

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
11788405 Downhole oil level detection device Zhibin Tian, Zanqing Wei, Lin Huang, Xiaoqiang Du, Bin Gao +4 more 2023-10-17
11739603 Core detection device of coring instrument Zhibin Tian, Lin Huang, Zanqing Wei, Shusheng Guo, Xingfang Wu +7 more 2023-08-29
11624244 Connecting structure for drill collar of logging while drilling instrument and drill collar sub male and female joints Zhongli Bao, Qiang Yu, Xiaofei Qin, Lin-Chung Huang, Xingfang Wu +2 more 2023-04-11