Average Co-Inventor Count = 1.80
ph-index = 2
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. Nov Canada Ulc (2 from 9 patents)
2. National Oilwell Varco, L.p. (1 from 572 patents)
3 patents:
1. 11454067 - Drill floor support structures
2. 11352843 - System and method for offline standbuilding
3. 8516751 - Mobile drilling rig