YZ

Yijin Zeng

CC China Petroleum & Chemical: 1 patents #41 of 216Top 20%
SE Sinopec Research Institute Of Petroleum Engineering: 1 patents #1 of 9Top 15%
📍 Dezhou, CN: #9 of 11 inventorsTop 85%
Overall (2021): #201,485 of 548,734Top 40%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10927612 Downhole auxiliary drilling apparatus Qunai Hu, Chenxi Zhao, Xiaojie Cui, Jianjun Zhao, Lanrong Ma +3 more 2021-02-23