Average Co-Inventor Count = 2.00
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 Ag (1 from 595 patents)
2. Ilford Limited (1 from 30 patents)
2 patents:
1. 4014862 - Production of hardened gelatin layers by the addition of quaternary
2. 3951940 - Method of producing a hardened gelatin layer using aqueous solution of a