FH

Fen Han

CO China National Offshore Oil: 1 patents #30 of 142Top 25%
CL China Oilfield Services Limited: 1 patents #31 of 78Top 40%
📍 Langfang, CN: #44 of 102 inventorsTop 45%
Overall (All Time): #2,898,327 of 4,157,543Top 70%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10018038 Drilling type sidewall coring apparatus Yongren Feng, Zhibin Tian, Tao-Cheng Lu, Liping Liu, Guiqing Hao +4 more 2018-07-10