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Expired Canadian patentCanada

Far-end cross-talk cancellation for data transmission on multiple propagation modes

CA 2407453 C · Owner: Clark, Lloyd D. Jr. · Inventors: Bombay, Bart J.; Clark, Lloyd D. Jr.

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

A digital telemetry system having improved data rate and robustness. The telemetry system has a data transmission cable and is capable of transmitting data between a first and second end on at least two propagation modes. A data source connected at the first end has data transmission circuitry to generate signals on these propagation modes. A receiver connected to the second end of the wireline cable has a first receive circuitry to receive signals on a first of the propagation modes and a second receive circuitry to receive signals on a second of the propagation modes. An adaptive far-end cross-talk cancellation circuitry connected to the first receive circuitry and to the second …

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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 31, 2001 and granted January 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 31, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 31, 2023.
  • 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 31, 2001
GrantedJanuary 24, 2012
Term endedMay 31, 2021
Patent numberCA 2407453 C
Classification (IPC)H04B3/32

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedMay 31, 2001Patent grantedJan 24, 2012Term endedMay 31, 2021

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