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Expired Canadian patentCanada

A method of and apparatus for paging a wireless terminal in a wireless telecommunications system

CA 2689956 C · Owner: Qualcomm Incorporated · Inventors: Gilhousen, Klein S.; Butler, Brian K.

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 method of and apparatus for paging a wireless terminal in a wireless telecommunications system reduce standby mode power consumption. A minimally encoded quick paging channel is established over which short quick page messages are transmitted during one of a set of quick paging slots. The quick page message indicates that a communications request has been received and that the receiving communication terminals should process a highly encoded full paging channel over which more detailed full page messages are transmitted during the next full paging slot. A terminal monitors full paging channel only after a quick page message has been received on the quick paging channel.

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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 29, 1998 and granted July 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 29, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 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.
FiledMay 29, 1998
GrantedJuly 10, 2012
Term endedMay 29, 2018
Patent numberCA 2689956 C
Classification (IPC)H04J13/00 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedMay 29, 1998Patent grantedJuly 10, 2012Term endedMay 29, 2018

Sources & verification

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