Average Co-Inventor Count = 6.72
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. Sbc Properties, L.p. (6 from 205 patents)
2. Ameritech Corporation (3 from 159 patents)
3. At&t Intellectual Property I, L.p. (1 from 16,478 patents)
10 patents:
1. 8705703 - Emergency telephone call notification service system and method
2. 7272221 - System and method for providing telephony services to remote subscribers
3. 7187686 - Telecommunication system, method and subscriber unit for use therein
4. 7126958 - Telecommunication system, method and subscriber unit for use therein
5. 7020268 - System and method for providing telephony services to remote subscribers
6. 6807272 - System and method for providing telephony services to remote subscribers
7. 6735285 - Emergency telephone call notification service system and method
8. 6411704 - System and method for providing telephony services to remote subscribers
9. 6370149 - Telecommunication system, method and subscriber unit for use therein
10. 6201856 - Emergency telephone call notification service system and method