Average Co-Inventor Count = 2.80
ph-index = 4
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. (2 from 1,452 patents)
2. Radioshack Corporation (2 from 68 patents)
7 patents:
1. 7787903 - Portable radio vehicular installation apparatus with back-up battery power and method
2. 7567777 - Apparatus and method for effecting communication between a wireless network and a satellite radio receiver
3. D510384 - Payment device
4. D497911 - Reader for a payment device
5. D497636 - Payment device
6. D488156 - Reader for a payment device
7. D487894 - Reader for a payment device