HZ

Hongning Zhang

CC China University Of Petroleum (East China): 1 patents #10 of 40Top 25%
📍 Baoding, CN: #6 of 10 inventorsTop 60%
Overall (2017): #398,179 of 506,227Top 80%
1
Patents 2017

Issued Patents 2017

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9540881 Method and system for improving drilling speed by using drill speed vibration Zhichuan Guan, Yongwang Liu, Wenzhong Wei, Ben Guan, Yucai Shi 2017-01-10