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Expired Canadian patentCanada

Device and method for data signal detection in the presence of distortion and interference in communication systems

CA 2186329 C · Owner: Yang, Jian · Inventors: Eyuboglu, M. Vedat; Yang, Jian

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

The present invention provides a device (200 300, 400) and, method (500) in multi-access communications system for reliably receiving burst transmissions from users in the presence of distortion and interference. The signal detector of the invention incorporates separate modules (280 290; 302, 304;, 402, 404) for distortion cancellation and interference suppression. This allows efficient tracking of distortion and interference characteristics.

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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 September 24, 1996 and granted October 17, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 24, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 24, 1996
GrantedOctober 17, 2000
Term endedSeptember 24, 2016
Patent numberCA 2186329 C
Classification (IPC)H04B15/00 +1 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedSep 24, 1996Patent grantedOct 17, 2000Term endedSep 24, 2016

Sources & verification

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