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. Gretag Imaging Ag (2 from 48 patents)
2 patents:
1. 5381209 - Process and apparatus for processing strips of photographic tape material
2. 5335045 - Photographic printing machine for copying originals on sheet-like copy