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Expired Canadian patentCanada

Burner

CA 1295229 C · Owner: Abe, Masahiro · Inventors: Nakayama, Michio; Abe, Masahiro; Arima, Koichiro

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

A burner consists of a plurality of combustion air outlets in space circumferentially of an inner wall of a tubular burner tile having an opened end part and a plurality of fuel gas outlets centrally of the burner tile. The combustion air outlet and the fuel gas outlet are constructed in such manner that: (a) the combustion air outlet is formed such that an air jetting direction has an angle of not more than 60° with respect to a tangent of an inner circumference of the burner tile; (b) a distance N in an axial direction of the burner between the combustion air outlet and the fuel gas outlet is determined from -0.1D to +0.4D (D: inner diameter of burner), when a case that the fuel gas …

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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

  • Granted February 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 4, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 25, 1986
GrantedFebruary 4, 1992
Term endedFebruary 4, 2009
Patent numberCA 1295229 C
Classification (IPC)F23D14/58 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedApril 25, 1986Patent grantedFeb 4, 1992Term endedFeb 4, 2009

Sources & verification

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