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. Institut Francais Du Pe'trole (1 from 2,424 patents)
2. Societe Europeene De Produits Refractaires (1 from 1 patent)
1 patent:
1. 4072193 - Propping agent and method of propping open fractures in the walls of a