Average Co-Inventor Count = 1.80
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. Verifone Gmbh (3 from 213 patents)
3 patents:
1. 5256867 - Card reader apparatus
2. D334924 - Memory cartridge for a point of transaction terminal
3. 5180905 - Card reader apparatus with replaceable card guide