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. Bergwerksverband Gmbh (1 from 231 patents)
2. Didier Engineering Gmbh (1 from 106 patents)
1 patent:
1. 5128021 - Pitch from coal tar pitch, method of its production, as well as