Average Co-Inventor Count = 2.30
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. At&t Intellectual Property I, L.p. (10 from 16,478 patents)
2. At+t Corp. (4 from 4,208 patents)
14 patents:
1. 9338191 - Session initiation protocol (SIP) message incorporating a number of predetermined address headers having predetermined address information
2. 9225749 - System and method for providing multi-media services to communication devices over a communications network
3. 8879542 - Method for providing local and toll services with LNP, and toll-free services to a calling party which originates the call from an IP location connected to a SIP-enabled IP network
4. 8732248 - System and method for providing multi-media services to communication devices over a communications network
5. 8634412 - Session initiation protocol (SIP) message incorporating a multi-purpose internet mail extension (MIME) media type for describing the content and format of information included in the SIP message
6. 8363648 - Session initiation protocol (SIP) message incorporating a multi-purpose internet mail extension (MIME) media type for describing the content and format of information included in the SIP message
7. 8255463 - System and method for providing multi-media services to communication devices over a communications network
8. 8165113 - Session initiation protocol (SIP) message incorporating a number of predetermined address headers having predetermined address information
9. 8072970 - Post answer call redirection via voice over IP
10. 7948973 - Session initiation protocol (SIP) message incorporating a multi-purpose internet mail extension (MIME) media type for describing the content and format of information included in the SIP message
11. 7567555 - Post answer call redirection via voice over IP
12. 7330483 - Session initiation protocol (SIP) message incorporating a multi-purpose internet mail extension (MIME) media type for describing the content and format of information included in the SIP message
13. 7254643 - System and method for providing multi-media services to communication devices over a communications network
14. 5481603 - Intelligent call processing based upon complete identification of