Patent Yard Sign in
Expired Canadian patentCanada

System and method for teleconferencing on an internetwork comprising connection-oriented and connectionless networks

CA 2227708 C · Owner: Reit, Robert E. · Inventors: West, Earle H.; Reit, Robert E.; Sun, Chaochen J.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A system and method for teleconferencing between conferees connected through a connectionless network and conferees connected through a connection-oriented network having a bridge. A call server connects to a bridge hosting a teleconference among connection-oriented conferees and joins the teleconference.The connection-oriented signal received by the call server is converted into a connectionless signal and sent to authorized authenticated conferees connected, through the connectionless network. The call server receives a connectionless signal from a conferee through the connectionless network converts the signals to a, connection-oriented signal and sends the connection-oriented signal to …

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed January 22, 1998 and granted April 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 22, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 2020.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 22, 1998
GrantedApril 3, 2001
Term endedJanuary 22, 2018
Patent numberCA 2227708 C
Classification (IPC)H04M3/56 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedJan 22, 1998Patent grantedApril 3, 2001Term endedJan 22, 2018

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.