BG

Ben Guan

CC China University Of Petroleum (East China): 1 patents #41 of 138Top 30%
📍 Qingdao, CN: #90 of 322 inventorsTop 30%
Overall (2020): #535,918 of 565,922Top 95%
1
Patents 2020

Issued Patents 2020

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10815743 Depressuriz od for downhole annulus drilling fluid Yongwang Liu, Zhichuan Guan, Yucai Shi, Hualin Liao 2020-10-27