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Expired Canadian patentCanada

Ceramic composite and methods of making the same

CA 1308886 C · Owner: Kuszyk, Jack Andrew · Inventors: Kennedy, Christopher Robin; Kuszyk, Jack Andrew

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

There is provided a method for producing a selfsupporting ceramic composite comprising (1) a ceramic matrix obtained by oxidation of an aluminum zinc alloy to form a polycrystalline oxidation reaction product of the metal with an oxidant, and (2) one or more fillers embedded by the matrix. The metal alloy and permeable mass of filler having at least one defined surface boundary are oriented relative to each other so that formation of the oxidation reaction product will occur into said mass of filler and in a direction towards said defined surface boundary. On heating the metal to a first temperature above its melting point but below the melting point of said oxidation reaction product to …

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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 October 20, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 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.
FiledJanuary 11, 1988
GrantedOctober 20, 1992
Term endedOctober 20, 2009
Patent numberCA 1308886 C
Classification (IPC)C04B35/65 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJan 11, 1988Patent grantedOct 20, 1992Term endedOct 20, 2009

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