Average Co-Inventor Count = 4.86
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. American Express Travel Related Services Company, Inc. (3 from 1,453 patents)
3 patents:
1. 8700435 - System and method for redemption and exchange of unused tickets
2. 7536307 - Ticket tracking and redeeming system and method
3. 7529681 - Ticket tracking, reminding, and redeeming system and method