Average Co-Inventor Count = 2.00
ph-index = 1
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 (1 from 1,192 patents)
2. The Standard Oil Company (ohio) (1 from 53 patents)
2 patents:
1. 4168148 - Coal desulfurization
2. 4162898 - Process for removing sulfur from coal