Average Co-Inventor Count = 4.00
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. Houilleres Du Bassin Du Nord Et Du Pasde-calais (1 from 3 patents)
1 patent:
1. 4193355 - Furnace walls which can be used at high temperatures