Average Co-Inventor Count = 2.40
ph-index = 2
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. 5387281 - Compositions based on 2,9-Dichloroquinacridone pigments
2. 5362780 - Compositions based on 2,9-dichloroquinacridone pigments