Average Co-Inventor Count = 3.43
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 Corporation (1 from 6,850 patents)
2. Crown Photo Systems (1 from 1 patent)
2 patents:
1. 5568215 - Film cartridge holder and adapter unit
2. 4974825 - Envelope feeder with separator shuttle assembly