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. Ethyl Corporation (2 from 1,362 patents)
2 patents:
1. 3984237 - Leaching of low-grade nickel complex ore
2. 3953200 - Nickel extraction process