Average Co-Inventor Count = 4.50
ph-index = 8
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, L.p. (14 from 16,478 patents)
2. At&t Labs, Inc. (5 from 74 patents)
3. Sbc Technology Resources, Inc. (4 from 169 patents)
4. At&t Services, Inc. (2 from 13 patents)
5. Sbc Properties, L.p. (1 from 205 patents)
6. Sbc Knowledge Ventures, L.p. (1 from 125 patents)
7. At&t Knowledge Ventures, LP (1 from 71 patents)
8. Sbc Services, Inc. (1 from 12 patents)
26 patents:
1. 9912807 - Communication device prompt selection
2. 9578168 - Distinctive ring tones prompted by call urgency and context
3. 9237230 - Distinctive ring tones prompted by call urgency and context
4. 8867724 - Distinctive ring tones prompted by call urgency and context
5. 8548153 - Incoming and outgoing call control customization
6. 8509406 - Presence enhanced telephony service architecture
7. 8422656 - Incoming and outgoing call control customization
8. 8306209 - Incoming and outgoing call control customization
9. 8150025 - Flexible ring-tone service
10. 8116444 - System and method of publishing contact information
11. 7751388 - Ethernet-based broadband communication channel methods and systems
12. 7660898 - Presence enhanced telephony service architecture
13. 7606218 - Ethernet-based digital subscriber line methods and systems
14. 7593396 - System and method for providing remote access to telecommunications services
15. 7565690 - Intrusion detection