Average Co-Inventor Count = 3.00
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. (572 patents)
2. Varco I/p, Inc. (191 patents)
3. Tuboscope Vetco International Inc. (16 patents)
4. David Lee Schulte (0 patent)
5. Thomas Cole Adams (0 patent)
6. Charles Newton Grichar (0 patent)
7. Jeffrey Earl Walker (0 patent)
8. Vincent Dominick, Sr. Leone (0 patent)
9. Kenneth Wayne Seyffert (0 patent)
10. Guy Lamont, III Mcclung (0 patent)
1 patent:
1. D631492 - Module for drilling fluid pump system