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Expired Canadian patentCanada

Synchronizing device for terminal equipment in an asynchronous transfer mode digital telecommunications network

CA 2097714 C · Owner: Alcatel Cit · Inventors: Renault, Denis; Campana, Roland

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 synchronizing device for terminal equipment in an asynchronous transfer mode telecommunications network comprising a device (7) for filtering the transfer jitter which is introduced by such a network and affects the network-routed data reception rate through said equipment and for matching the local clock signal frequency supplied by a local clock within said equipment to the frequency of a signal output by said filtering device. The synchronizing device comprises a buffer memory (MTB1 MTB2) into which said data are entered as they are received by said equipment and a device (5, 5') for reading said buffer memory as said signal is output by said filtering and matching device with a delay …

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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 1, 1992 and granted February 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 1, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 2014.
  • 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 1, 1992
GrantedFebruary 25, 1997
Term endedOctober 1, 2012
Patent numberCA 2097714 C
Classification (IPC)H04L7/04 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedOct 1, 1992Patent grantedFeb 25, 1997Term endedOct 1, 2012

Sources & verification

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