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. Basf Corporation (2 from 2,036 patents)
2 patents:
1. 5004504 - Transparent iron oxide pigments
2. 4944806 - Rigmentary salt of a triphenylmethane compound and process for making