Average Co-Inventor Count = 4.00
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. Cnpc USA Corporation (1 from 92 patents)
2. Cnpc Chuanqing Drilling Engineering Company Limited (1 from 7 patents)
1 patent:
1. 10072197 - Crosslinked high molecular weight polymers for use in water-based drilling fluids