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Expired Canadian patentCanada

Fused cast high chrome refractory and method for manufacturing same

CA 1205096 A · Owner: Kennecott Corporation · Inventors: Staten, Walter T.

CIPO record

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Abstract From the Canadian patent

A fused cast ceramic composition having superior corrosion and stoning resistance in the presence of E glass when compared with prior art compositions having comparable chromia content. The composition is a solidified fusion of from about 65 to about 98 weight percent Cr203, from about 0.75 to about 4 weight percent MgO and from about 1 to about 34.25 weight percent alumina. The method for manufacturing the composition by fusing the appropriate materials at the required concentrations is also described.

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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 May 27, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 27, 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.
FiledMay 14, 1984
GrantedMay 27, 1986
Term endedMay 27, 2003
Patent numberCA 1205096 A
Classification (IPC)C04B35/12 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedMay 14, 1984Patent grantedMay 27, 1986Term endedMay 27, 2003

Sources & verification

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