LM

Lanrong Ma

CC China Petroleum & Chemical: 1 patents #41 of 216Top 20%
SE Sinopec Research Institute Of Petroleum Engineering: 1 patents #1 of 9Top 15%
Overall (2021): #364,628 of 548,734Top 70%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

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