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Expired Canadian patentCanada

Methods and apparatus for operating gas turbine engines

CA 2499675 C · Owner: Turco, John B. · Inventors: Turco, John B.; Wollenweber, Gary Craig

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

An aircraft gas turbine engine assembly (10) including at least one propelling gas turbine engine (11) comprising a core engine (13) and an exhaust (32). The core engine includes at least one turbine (20) for generating thrust for the aircraft; and at least one auxiliary engine (12) including an inlet (24) at least one turbine (44), and an exhaust (80). The inlet is coupled in flow communication with at least one propelling gas turbine engine such that a portion of airflow (31) flowing through the propelling engine is extracted from the propelling engine upstream from the propelling engine turbine and is channeled to the auxiliary engine for generating power.

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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 March 3, 2005 and granted October 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 3, 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.
FiledMarch 3, 2005
GrantedOctober 22, 2013
Term endedMarch 3, 2025
Patent numberCA 2499675 C
Classification (IPC)F02C7/32 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedMarch 3, 2005Patent grantedOct 22, 2013Term endedMarch 3, 2025

Sources & verification

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