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. Zeochem LLC (1 from 13 patents)
2. Pq Corporation (112 patents)
3. Ecovyst Catalyst Technologies LLC (3 patents)
4. Pq Holding, Inc. (2 patents)
1 patent:
1. 4017590 - Preparation of synthetic ferrierite