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Expired Canadian patentCanada

Regenerative burner system

CA 1307733 C · Owner: British Steel Plc · Inventors: Jenkins, David P.; Edmundson, James T.

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 regenerative burner system comprises two burners alternately fired and each having an air and fuel supply thereto traversing separate heat exchangers. The arrangement is such that the hot gases exhausted from the furnace during firing of the one and the other burners traverse the heat exchangers associated with the other and the one burners, respectively, relinquishing heat thereto whereby both the fuel and the air supply to each burner extracts heat from its associated heat exchanger during the firing cycle of that burner. By heating both the fuel and the air input to the regenerative system, fuels of low calorific value, e.g. blast furnace gas or any gases low in or devoid of …

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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 September 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 22, 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.
FiledDecember 20, 1988
GrantedSeptember 22, 1992
Term endedSeptember 22, 2009
Patent numberCA 1307733 C
Classification (IPC)F23D14/66 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedDec 20, 1988Patent grantedSep 22, 1992Term endedSep 22, 2009

Sources & verification

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