Average Co-Inventor Count = 6.62
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. Sbc Properties, L.p. (3 from 205 patents)
2. Ameritech Corporation (2 from 159 patents)
3. At&t Intellectual Property I, LP (1 from 16,497 patents)
4. At&t Knowledge Ventures, LP (1 from 75 patents)
7 patents:
1. 8126132 - Method and system for providing enhanced call waiting
2. 7391859 - Method and system for providing enhanced call waiting
3. 7388952 - Method and system for providing enhanced call waiting
4. 7139383 - Method and system for providing enhanced call waiting
5. 6829343 - Method and system for providing enhanced call waiting
6. 6633634 - Method and system for providing enhanced call waiting
7. 6219414 - Method and system for providing enhanced call waiting