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Expired Canadian patentCanada

Burner for liquid fuels

CA 2181748 C · Owner: Skoog, Kurt · Inventors: Skoog, Kurt

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

An apparatus for burning liquid fuels or solid pulverized fuels in a liquid carrier is provided comprising a central port arranged to introduce a fuel-air mixture into a combustion chamber. A first plurality of inlet ports is arranged concentrically about the central port for introducing a first fuel and/or air flow into a space upstream of the central port. In addition, a second plurality of inlet ports is arranged to introduce a second fuel and/or air flow substantially intersecting the inlet flow from the first ports to provide improved fuel-air mixing for introduction into the combustion chamber.

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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 July 22, 1996 and granted August 24, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 22, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 22, 1996
GrantedAugust 24, 1999
Term endedJuly 22, 2016
Patent numberCA 2181748 C
Classification (IPC)F23D11/40 +1 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedJuly 22, 1996Patent grantedAug 24, 1999Term endedJuly 22, 2016

Sources & verification

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