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Expired Canadian patentCanada

Tooling and method for forming complex composite articles

CA 1313491 C · Owner: Dublinski Alex C. · Inventors: Davis Geoffrey C. R.; Kornitzky Michael A.; Dublinski Alex C.

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Abstract From the Canadian patent

Tooling and Method for Forming Complex Composite Articles, A method of making a flexible composite tool particularly adapted for composite molding and the composite tool made by this method. The method includes dissolving a B-staged fluoroelastomer in a suitable solvent such as methyl ethyl ketone or toluene to form a fluoroelastomer solution. A fabric is then coated with the fluoroelastomer solution. The solvent is evaporated and the impregnated fabric is sandwiched between unreinforced sheets to form a reinforced tooling material. The reinforced tooling material is laid up with alternating layers of unreinforced fluoroelastomer and then cured to form a composite tool which is stable …

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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 February 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 9, 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.
FiledDecember 5, 1988
GrantedFebruary 9, 1993
Term endedFebruary 9, 2010
Patent numberCA 1313491 C
Classification (IPC)B29C33/12 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 5, 1988Patent grantedFeb 9, 1993Term endedFeb 9, 2010

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