Average Co-Inventor Count = 1.33
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. Shell Oil Comapny (2 from 7,645 patents)
2 patents:
1. 4595513 - Oil base well treating fluids thickened by block copolymers
2. 4490493 - Stabilized bituminous blends