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Expired Canadian patentCanada

Enhanced dedicated teleconferencing system

CA 1310729 C · Owner: Koenig, William J. · Inventors: Garner, Merle D.; Blinken, Robert J.; Koenig, William J.

CIPO record

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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 method and apparatus for enhancing the operation of a teleconferencing system, utilizes a programmed service computer to drive a bridge which has a plurality of ports for establishing communication with a plurality of conferees. The bridge includes a microprocessor which responds to a plurality of commands, each requiring information in the form of plural constant information responses and plural variable information responses. The constant information responses involve the status and identification for a conference and conferees of that conference. The variable response information is specific to each conferee. This may include first and last name for the conferee, as well as the …

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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

  • Granted November 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 12, 1988
GrantedNovember 24, 1992
Term endedNovember 24, 2009
Patent numberCA 1310729 C
Classification (IPC)H04M3/56

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedDec 12, 1988Patent grantedNov 24, 1992Term endedNov 24, 2009

Sources & verification

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