Average Co-Inventor Count = 3.00
ph-index = 3
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 (3 from 6,858 patents)
3 patents:
1. 5264878 - Polymers and hard, gas-permeable contact lenses made therefrom
2. 5210169 - Thermosetting composition
3. 5196493 - Polymers and hard, gas-permeable contact lenses made therefrom