Average Co-Inventor Count = 4.00
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. Visa International Service Association (3 from 2,516 patents)
3 patents:
1. 8533116 - Internet payment, authentication and loading system using virtual smart card
2. 8175973 - Internet payment, authentication and loading system using virtual smart card
3. 7908216 - Internet payment, authentication and loading system using virtual smart card