Average Co-Inventor Count = 2.20
ph-index = 6
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 (7 from 16,497 patents)
2. Ameritech Corporation (4 from 159 patents)
3. Sbc Properties, L.p. (3 from 205 patents)
14 patents:
1. 11216586 - Multi-dimensional progressive security for personal profiles
2. 8630302 - System and network for deriving voice channels on a broadband communication line
3. 8594115 - Distributing voice and data information over wireless and wireline networks
4. 8238354 - Wide area communication networking
5. 7995601 - System and method for distributing voice and data information over wireless and wireline networks
6. 7525959 - System and method for distributing voice and data information over wireless and wireline networks
7. 7525990 - Wide area communication networking
8. 7187686 - Telecommunication system, method and subscriber unit for use therein
9. 7126958 - Telecommunication system, method and subscriber unit for use therein
10. 6917624 - Method and apparatus for providing a derived digital telephone voice channel
11. 6370149 - Telecommunication system, method and subscriber unit for use therein
12. 6335936 - Wide area communication networking
13. 6285671 - Method and system for providing facsimile service over a digital subscriber line
14. 6141356 - System and method for distributing voice and data information over