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Expired Canadian patentCanada

Diffuser for jet turbine engine

CA 2494943 C · Owner: Trahot, Denis · Inventors: Pieussergues, Christophe; Trahot, Denis; Sablayrolles, Pierre

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A turbojet diffuser disposed between a compressor (2) and a combustion chamber (3) and secured to an outer upstream annular flange (18) of an outer casing (17) of the combustion chamber (3) by suspension means which comprise a first frustoconical wall (33) extending from the outer longitudinal wall (31) of the diffuser (29) towards the combustion chamber (3) and a second frustoconical wall (34) extending towards the compressor (2) between the first frustoconical wall (33) and the outer casing (17) of the combustion chamber (3).

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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 January 31, 2005 and granted April 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 31, 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.
FiledJanuary 31, 2005
GrantedApril 24, 2012
Term endedJanuary 31, 2025
Patent numberCA 2494943 C
Classification (IPC)F01D25/28 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJan 31, 2005Patent grantedApril 24, 2012Term endedJan 31, 2025

Sources & verification

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