Average Co-Inventor Count = 4.00
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 7,646 patents)
2 patents:
1. 4004885 - Removal of sulfur oxides and particulate matter from waste gas streams
2. 3966879 - Removal of sulfur oxides and particulate matter from waste gas streams