Average Co-Inventor Count = 5.00
ph-index = 1
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. At+t Corp. (1 from 4,208 patents)
1 patent:
1. 5479493 - Calling line identification adjunct for use with a communication system