Average Co-Inventor Count = 1.33
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. Freeport Minerals Company (2 from 29 patents)
2 patents:
1. 4123107 - Integrated sulfur mining - sulfuric acid production system
2. 4035023 - Apparatus and process for hydraulic mining