Average Co-Inventor Count = 2.00
ph-index = 3
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. Phillips Petroleum Company (3 from 5,071 patents)
3 patents:
1. 4692312 - Apparatus for producing carbon black
2. 4582695 - Process for producing carbon black
3. 4315902 - Method for producing carbon black