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Expired Canadian patentCanada

Apparatus for burning gas in the combustion chamber of a fireplace

CA 2016972 C · Owner: Karabin, Tadeusz · Inventors: Beal, Thomas J.; Karabin, Tadeusz; Mundy, Roy E.

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

Method and gas burner assembly for producing amongst the arrangement of non-combustible logs, and essentially yellow flame pattern with substantially low levels of carbon monoxide production. In general, method hereof employs a gas burner assembly having one or more burner each having a plurality of gas jets. The burner assembly is disposed between the combustion chamber of fireplace enclosure which contains a predetermined volume of combustion chamber air which is continuously provided from outside of the combustion chamber. Non-combustible fireplace logs are arranged above the gas burner assembly so as to provide one or more flow pathss between the burner and adjacent logs for allowing, …

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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 May 18, 1990 and granted February 8, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 18, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 18, 1990
GrantedFebruary 8, 1994
Term endedMay 18, 2010
Patent numberCA 2016972 C
Classification (IPC)F24B1/18 +1 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedMay 18, 1990Patent grantedFeb 8, 1994Term endedMay 18, 2010

Sources & verification

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