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. Visa International Service Association (2 from 2,516 patents)
2. Visa Europe Limited (2 from 46 patents)
4 patents:
1. 11151537 - Payment device
2. 10528933 - Payment device
3. 9883387 - Authentication using application authentication element
4. 8320962 - Contactless disablement