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Expired Canadian patentCanada

Control apparatus for internal combustion engine

CA 2706638 C · Owner: Shibagaki, Nobuyuki · Inventors: Mashiki, Zenichiro; Shibagaki, Nobuyuki

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 control apparatus comprises an injection control unit controlling first and second fuel injection mechanisms of an internal combustion engine injecting fuel into a cylinder and an intake manifold respectively, such that the first and second fuel injection mechanisms partake in fuel injection including a state of injection from one of the first and second fuel injection mechanisms being ceased. A sensing unit senses that the first fuel injection mechanism cannot operate properly. A control unit controls the internal combustion engine such that temperature in a cylinder of the internal combustion engine is reduced when the first fuel injection mechanism cannot operate properly.

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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 October 28, 2005 and granted February 26, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 28, 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.
FiledOctober 28, 2005
GrantedFebruary 26, 2013
Term endedOctober 28, 2025
Patent numberCA 2706638 C
Classification (IPC)F02D41/22

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedOct 28, 2005Patent grantedFeb 26, 2013Term endedOct 28, 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.