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Expired Canadian patentCanada

Method and arrangement for transferring messages in a radio communication system

CA 2353632 C · Owner: Telefonaktiebolaget Lm Ericsson · Inventors: Hicks, Scott; Lundstrom, Anders

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

The present invention is related to a method and arrangement in a radio communication system for performing a message transfer transaction in which at least one message is transferred in at least one frame from a first unit to a second unit. Properties of radio signals exchange between the first unit and the second unit are measured (501). A mode of informing the first unit of frame receipt status at the second unit during the message transfer transaction is selected (502) based on the measured radio signal properties. The at least one frame is transferred (503) from the first unit to the second unit while the first unit is informed of the frame receipt status at the second unit in …

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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 November 19, 1999 and granted July 12, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 19, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 2021.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 19, 1999
GrantedJuly 12, 2011
Term endedNovember 19, 2019
Patent numberCA 2353632 C
Classification (IPC)H04L1/20 +2 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedNov 19, 1999Patent grantedJuly 12, 2011Term endedNov 19, 2019

Sources & verification

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