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Expired Canadian patentCanada

Aircraft fuel storage leak detection method and detection circuit therefor

CA 2580408 C · Owner: Clarke, Raymond · Inventors: Brown, Michael Daniel; Tichborne, Franklin George; Clarke, Raymond

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Abstract From the Canadian patent

A method of detecting a fuel leak from a fuel store of an aircraft is described. A processor (1) receives inputs (2 3) relating to the amount of , fuel in the fuel store and to the rate of fuel used by the aircraft both , inputs being subject to noise. The processor defines a fuel flow system state defined by a noise-compensated measures of the amount of fuel in the fuel store, a fuel leak amount estimate and a fuel leak rate estimate. The processor (1) periodically calculates a new estimated state of the system in view of a previous estimated state of the system and values of the inputs (2 3). The processor monitors the fuel leak amount estimate and the fuel leak rate estimate and if …

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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 21, 2005 and granted July 30, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 21, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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 21, 2005
GrantedJuly 30, 2013
Term endedSeptember 21, 2025
Patent numberCA 2580408 C
Classification (IPC)G01M3/32 +2 more

Timeline

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2006200820102012201420162018202020222024Application filedSep 21, 2005Patent grantedJuly 30, 2013Term endedSep 21, 2025

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