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Expired Canadian patentCanada

Process for preparing self-supporting bodies and products made thereby

CA 1318488 C · Owner: Lanxide Technology Company, Lp · Inventors: White, Danny R.; Claar, T. Dennis; Aghajanian, Michael K.

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

Self-supporting bodies are produced by reactive infiltration of a parent metal into boron carbide typically resulting in a composite comprising a boron-containing compound and metal. The mass to be infiltrated may contain one or more inert fillers admixed with the boron carbide to produce a composite by reactive infiltration which composite, comprises a matrix of metal and boron-containing compound embedding the filler. The relative amounts of reactants and process conditions may be altered or controlled to yield a body containing varying volume percents of ceramic metal, and/or porosity.

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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 June 1, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 1, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 15, 1988
GrantedJune 1, 1993
Term endedJune 1, 2010
Patent numberCA 1318488 C
Classification (IPC)B22F1/00 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJuly 15, 1988Patent grantedJune 1, 1993Term endedJune 1, 2010

Sources & verification

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