Average Co-Inventor Count = 2.00
ph-index = 4
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. Ameritech Services, Inc. (6 from 26 patents)
2. AT&T Intellectual Property I, LP (1 from 16,497 patents)
7 patents:
1. 7796746 - Method and system for call tracing
2. 7221751 - Method and system for call tracing
3. 6925164 - Method and system for call tracing
4. 6718031 - Method and system for call tracing
5. 6404882 - Method and system for call tracing
6. 6243458 - Method and system for call tracing
7. 5999616 - Method and system for call tracing