XL

Xi Lin Liu

NV National Oilwell Varco: 7 patents #26 of 551Top 5%
Overall (All Time): #690,733 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
11891864 Pipe handling arm Robert Benjamin Donnally 2024-02-06
11035183 Devices, systems, and methods for top drive clearing Robert Benjamin Donnally, Jay John Thiessen 2021-06-15
9441423 Drilling rig masts and methods of assembly and erection Robert Benjamin Donnally, Chunqiao Ren, Stuart Arthur Lyall McCurdy, Hui SHENG, Yan Yu 2016-09-13
8875911 Drilling rig mast lift systems and methods Robert Benjamin Donnally, Chunqiao Ren, Yan Yu, Peng Yue, Wei Wang 2014-11-04
8549815 Drilling rig masts and methods of assembly and erecting masts Robert Benjamin Donnally, Chunqiao Ren, Stuart Arthur Lyall McCurdy, Hui SHENG, Yan Yu 2013-10-08
8468753 Drilling rigs and erection methods Robert Benjamin Donnally, Chunqiao Ren, Stuart Arthur Lyall McCurdy, Hui SHENG, Yan Yu 2013-06-25
8047303 Drilling rig drawworks installation Robert Benjamin Donnally, Chunqiao Ren, Stuart Arthur Lyall McCurdy, Hui SHENG, Yan Yu 2011-11-01