Average Co-Inventor Count = 5.00
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. Northern Telecom Limited (3 from 2,276 patents)
2. Sbc Properties, L.p. (2 from 205 patents)
3. At&t Intellectual Property I, L.p. (1 from 16,478 patents)
4. Ameritech Corporation (1 from 159 patents)
4 patents:
1. 8687773 - Method and system for interfacing systems unified messaging with legacy systems located behind corporate firewalls
2. 7162014 - Method and system for interfacing systems unified messaging with legacy systems located behind corporate firewalls
3. 6868144 - Method and system for interfacing systems unified messaging with legacy systems located behind corporate firewalls
4. 6487278 - Method and system for interfacing systems unified messaging with legacy systems located behind corporate firewalls