Average Co-Inventor Count = 6.21
ph-index = 6
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. American Express Travel Related Services Company, Inc. (8 from 1,453 patents)
8 patents:
1. 10176475 - Geographic area multiple service card system
2. 8589225 - Geographic area multiple service card system
3. 7912777 - System and method for using cash rebates
4. 7503487 - Geographic area multiple service card system
5. 7360699 - Geographic area multiple service card system
6. 7172112 - Public/private dual card system and method
7. 7163145 - Geographic area multiple service card system
8. 6742704 - Multiple-service card system