Average Co-Inventor Count = 3.43
ph-index = 2
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 Bell Laboratories (1 from 3,345 patents)
2. At&t Ipm Corp. (1 from 91 patents)
2 patents:
1. 5463685 - Network based outbound call management
2. 5329581 - Target area calling system