Average Co-Inventor Count = 2.00
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. Atlantic Richfield Company (2 from 1,851 patents)
2 patents:
1. 4666585 - Disposal of petroleum sludge
2. 4610780 - Method for removing sulfur-containing impurities from hydrocarbons