Average Co-Inventor Count = 3.00
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. The Standard Oil Company (2 from 1,192 patents)
2 patents:
1. 4039499 - Product
2. 3940469 - Process for forming hollow fibers