Average Co-Inventor Count = 4.29
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, L.p. (3 from 572 patents)
3 patents:
1. 11873695 - Blowout preventer apparatus and method
2. 10662730 - Blowout preventer packing assembly
3. 10472917 - SBOP swarf wiper