Average Co-Inventor Count = 6.36
ph-index = 2
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 (3 from 16,497 patents)
2. At+t Corp. (1 from 4,208 patents)
3. At&t Mobility II LLC (1 from 2,868 patents)
4 patents:
1. 11889020 - Method and system for challenging potential unwanted calls
2. 9769317 - Conference system with enhanced security and authentication
3. 7899865 - Managing media server resources in a VoIP network
4. 7656866 - Controlling media server resources in a VoIP network