IP Telephony Intellectual Property
This page provides information on patents that have been reported
to Packetizer that potentially cover packet-switch conversational protocols,
including Voice over IP (VoIP) and videoconferencing. There are links
to pages that reportedly provide information that might demonstrate
some prior art to patent claims. If you would like to see something listed
here or have comments to make, please
send e-mail to the webmaster.
United States
- Lucent
- 4,100,377 - Packet transmission of speech (1977)
- 4,748,620 - Time stamp and packet virtual sequence numbering for reconstructing information signals from packets (1986)
- Henley, et al.
- 5,526,353 - System and method for communication of audio data over a packet-based network (1994)
- MultiTech
- 5,452,289 - Computer-based multifunction personal communications system (1993)
- BTG
(acquired from
Intelligence at Large)
- 5,623,490 - Method and apparatus for multiple media digital communication system (1996)
- 5,995,491 - Method and apparatus for multiple media digital communication system (1997)
- 6,104,706 - Method and apparatus for multiple media digital communication system (1999)
- VoIP, Inc.
- 6,501,837 - Telephone call connection architecture
Potential Source of Prior Art
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