Average Co-Inventor Count = 2.00
ph-index = 5
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, L.p. (5 from 16,481 patents)
2. Ameritech Corporation (3 from 159 patents)
3. Sbc Properties, L.p. (1 from 205 patents)
9 patents:
1. 9571648 - Method of providing 911 service to a private branch exchange
2. 9232061 - Method of providing 911 service to a private branch exchange
3. 8600010 - Method of providing 911 service to a private branch exchange
4. 7974389 - Method of providing 911 service to a private branch exchange
5. 7436938 - Method of providing 911 service
6. 6950499 - Method of providing 911 service to a private branch exchange
7. 6650733 - Method of providing 911 service to a private branch exchange
8. 6501831 - Method of providing 911 service to a private branch exchange
9. 6415019 - Method of providing 911 service to a private branch exchange