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. Ciba-Geigy Corporation (2 from 6,858 patents)
2 patents:
1. 5093247 - Phenanthridine derivatives, process for the preparation thereof, and
2. 4939158 - Phenanthridine derivatives and compositions containing them