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Expired Canadian patentCanada

Gas-transmitting wall element for a metallurgical vessel, a metallurgical vessel having such a wall element, and a method of producing steel

CA 1201591 A · Owner: Hoogovens Groep Bv · Inventors: Buhrmann, Gerardus P.; Steen, Adam

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Abstract From the Canadian patent

Gas-transmitting wall element for a metallurgical vessel, a metallurgical vessel having such a wall element, and a method of producing steel" ABSTRACT OF THE DISCLOSURE, A gas-transmitting wall element for a metallurgical vessel having a refractory lining is described which is subject to low wear is reproducible, and makes unnecessary continuous blowing of gas through it. The element has an outer sheet metal box open at, one end, and a refractory filling in the box comprising at least one brick spaced from the closed end of the box into which a gas inlet opens. The brick contacts the metal sidewalls of the box and has grooves to allow the gas to pass to the open end of the box.

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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 March 11, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 17, 1982
GrantedMarch 11, 1986
Term endedMarch 11, 2003
Patent numberCA 1201591 A
Classification (IPC)F27D3/16 +2 more

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedNov 17, 1982Patent grantedMarch 11, 1986Term endedMarch 11, 2003

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