Average Co-Inventor Count = 2.77
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. AT&T Intellectual Property I, LP (2 from 16,497 patents)
2. Sbc Properties, L.p. (2 from 205 patents)
3. Ameritech Corporation (1 from 159 patents)
4. Sbc Holdings Properties, L.p. (1 from 4 patents)
6 patents:
1. 8670547 - Direct route ISDN primary route interface
2. 7508926 - Method and system for creating a billing record with a called party's name
3. 7406165 - Direct route ISDN primary route interface
4. 7149292 - System and method for creating a billing record with a called party's name
5. 6868147 - System and method for creating a billing record with a called party's name
6. 6459779 - System and method for creating a billing record with a called party's name