Average Co-Inventor Count = 2.67
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 Ag (2 from 595 patents)
2 patents:
1. 4656200 - Phosphonic acid salts as flame retardants for polyurethanes and
2. 4565833 - Fire retardant composition