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Expired Canadian patentCanada

System for teleconferencing in which collaboration types and participants by names or icons are selected by a participant of the teleconference

CA 2296189 C · Owner: Collaboration Properties, Inc. · Inventors: Burns, Emmett R.; Ludwig, Lester F.; Burnett, Gerald J.

CIPO record

Overview

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

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Abstract From the Canadian patent

A multimedia collaboration system that integrates separate real-time and asynchronous networks--the, former for real-time audio and video and the latter for control signals and textual, graphical and other, data--in a manner that is interoperable across different computer and network operating system, platforms and which closely approximates the experience of face-to-face collaboration, while liberating, the participants from the limitations of time and distance. These capabilities are achieved by exploiting, a variety of hardware software and networking technologies in a manner that preserves the quality and, integrity of audio/video/data and other multimedia information even after , …

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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 October 3, 1994 and granted July 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 3, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 3, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 3, 1994
GrantedJuly 24, 2001
Term endedOctober 3, 2014
Patent numberCA 2296189 C
Classification (IPC)H04N7/15 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedOct 3, 1994Patent grantedJuly 24, 2001Term endedOct 3, 2014

Sources & verification

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