Average Co-Inventor Count = 3.00
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 (4 from 2,520 patents)
4 patents:
1. 10963932 - User enhanced authentication system for online purchases
2. 10896452 - User enhanced authentication system for online purchases
3. 9996864 - User enhanced authentication system for online purchases
4. 8612305 - User enhanced authentication system for online purchases