Average Co-Inventor Count = 1.71
ph-index = 3
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. National Oilwell Varco, L.p. (6 from 572 patents)
6 patents:
1. 10465377 - Drilling rig with self-elevating drill floor
2. 9988807 - Drilling rig with self-elevating drill floor
3. 9212778 - Apparatus and method for positioning connection equipment on a drilling rig
4. 8814487 - Impact absorbing access platform for drilling structures
5. 8317448 - Pipe stand transfer systems and methods
6. 7841415 - Iron roughneck extension systems