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. Oce-van Der Grinten N.v. (2 from 66 patents)
2 patents:
1. 4054450 - Indirect electrophotographic process with a nitro-phenolsultonephthalein
2. 3951655 - Dye sensitized photoconductive material