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Expired Canadian patentCanada

Process and device for detecting failures of pressure sensors in aircraft air data computers

CA 2448836 C · Owner: D'Ouince, Arnaud · Inventors: Gaucheron, Philippe; Bellier, Arnaud; D'Ouince, Arnaud

CIPO record

Overview

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Abstract From the Canadian patent

The device (1) for detecting the failure of a process sensor (5) of an air data system (2) of an aircraft comprising at least two pressure sensors (5) comprises means for acquiring the values of measurements made by the pressure sensors (5) means for calculating the deviation between the values thus measured means for comparing this deviation with a predetermined threshold value and means (13) for displaying, if said deviation is greater than said threshold value a failure cue relating to the air data system (2) on a display device (15) which is mounted on the aircraft.

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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 7, 2003 and granted August 14, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 7, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 2025.
  • 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 7, 2003
GrantedAugust 14, 2012
Term endedNovember 7, 2023
Patent numberCA 2448836 C
Classification (IPC)G01L27/00 +1 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedNov 7, 2003Patent grantedAug 14, 2012Term endedNov 7, 2023

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