Average Co-Inventor Count = 11.00
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. Other (1 from 832,680 patents)
2. At&t Intellectual Property I, L.p. (1 from 16,478 patents)
3. Sbc Holdings Properties, L.p. (1 from 4 patents)
3 patents:
1. 8139732 - Method and system for providing enhanced caller identification
2. 7227931 - Method and system for providing enhanced caller identification screening using audible caller name announcement
3. 6178232 - Method and system for providing enhanced caller identification