YS

Yucai Shi

CC China University Of Petroleum (East China): 3 patents #6 of 138Top 5%
📍 Qingdao, CN: #18 of 322 inventorsTop 6%
Overall (2020): #61,172 of 565,922Top 15%
3
Patents 2020

Issued Patents 2020

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
10815743 Depressuriz od for downhole annulus drilling fluid Yongwang Liu, Zhichuan Guan, Hualin Liao, Ben Guan 2020-10-27
10801282 Screw drill bypass valve with large displacement diversion function Zhibin Fan, Zhichuan Guan, Yongwang Liu, Weixing YANG, Zhixiang Teng +2 more 2020-10-13
10718176 Drilling speed improvement device capable of producing both hydraulic pulse and impact vibration Hualin Liao, Jilei NIU, Zhichuan Guan, Yandong Yang, Yongwang Liu +1 more 2020-07-21