Average Co-Inventor Count = 7.94
ph-index = 5
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. (6 from 1,453 patents)
6 patents:
1. 10176475 - Geographic area multiple service card system
2. 8589225 - Geographic area multiple service card system
3. 7503487 - Geographic area multiple service card system
4. 7360699 - Geographic area multiple service card system
5. 7163145 - Geographic area multiple service card system
6. 6742704 - Multiple-service card system