Average Co-Inventor Count = 2.00
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. Statoil Petroleum As (1 from 163 patents)
1 patent:
1. 10443342 - Method and apparatus for sealing an annulus around a drill-pipe when drilling down-hole