Average Co-Inventor Count = 3.27
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. The Standard Oil Company (3 from 1,192 patents)
3 patents:
1. 5057641 - High pressure facilitated membranes for selective separation and process
2. 4634686 - Yttrium silicate molecular sieves
3. 4486397 - Group IIIB metallophosphates