Average Co-Inventor Count = 2.00
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. At&t Intellectual Property I, LP (2 from 16,507 patents)
2. Ameritech Corporation (1 from 159 patents)
3. Sbc Knowledge Ventures, L.p. (1 from 125 patents)
4 patents:
1. 8705701 - Security system with call management functionality
2. 8107594 - Security system with call management functionality
3. 7167543 - Security system with call management functionality
4. 6370233 - Security system with call management functionality