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Expired Canadian patentCanada

Improved electronic television program schedule guide system and method

CA 2190744 C · Owner: News America Publishing, Inc. · Inventors: Alten, Jerry; Morris, Michael; Davis, Bruce

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

An electronic program, schedule system which includes a receiver for receiving, broadcast, satellite or cablecast television programs for a, plurality of television channels and a tuner for tuning a, television receiver to a selected one of the plurality of channels. A data processor receives and stores in a memory television, program schedule information for a plurality of television, programs to appear on the plurality of television channels. A user control apparatus such as a remote controller, is, utilized by a viewer to choose user control commands and, transit signals in response to the data processor which, receives the signals in response to user control commands. A, television …

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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 May 20, 1994 and granted May 14, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 20, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 20, 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.
FiledMay 20, 1994
GrantedMay 14, 2002
Term endedMay 20, 2014
Patent numberCA 2190744 C
Classification (IPC)H04N5/44 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedMay 20, 1994Patent grantedMay 14, 2002Term endedMay 20, 2014

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