Average Co-Inventor Count = 1.00
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. Weatherford/lamb, Inc. (1 from 1,209 patents)
2. Renovus Limited (2 patents)
1 patent:
1. 7204315 - Dual valve well control in underbalanced wells