Average Co-Inventor Count = 3.69
ph-index = 1
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 Norway As (4 from 50 patents)
4 patents:
1. 11492857 - Torque device for oil field use and method of operation for same
2. 10550651 - Torque device for oil field use and method of operation for same
3. 9752394 - Die holder device and method for utilizing the same
4. 9303468 - Drilling system and a device for assembling and disassembling pipe stands