Average Co-Inventor Count = 3.50
ph-index = 4
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. Varco I/p, Inc. (4 from 191 patents)
2. National Oilwell Varco, L.p. (572 patents)
4 patents:
1. 8231010 - Screen assemblies and vibratory separators
2. 7306057 - Thermal drill cuttings treatment with weir system
3. 7175027 - Shaker screen and clamping system
4. 6868972 - Fluid flow diffusers and vibratory separators