Average Co-Inventor Count = 3.20
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. (4 from 1,452 patents)
4 patents:
1. 8615458 - Industry size of wallet
2. 8401947 - Industry size of wallet
3. 8380559 - Identifying luxury merchants and consumers
4. 8239250 - Industry size of wallet