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Expired Canadian patentCanada

Contact conductor for electric vehicles

CA 1296550 C · Owner: Alcan International Limited · Inventors: Gallerneault, Willard Mark; Fortin, Paul-Emile

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

A contact conductor for electric vehicles is produced from an aluminum alloy containing an excess of silicon. The alloy comprises 0.2-1% by weight magnesium 1-7% by, weight silicon and the balance being aluminum and incidental impurities. The conductor is produced by the steps of: (1) casting the alloy into a continuous bar (2) hot, rolling to rod without intermediate cooling (3) quenching, the hot rolled rod, (4) cold deforming the quenched rod and (5) subjecting the cold deformed rod to artificial aging.

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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 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 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.
FiledMay 20, 1987
GrantedMarch 3, 1992
Term endedMarch 3, 2009
Patent numberCA 1296550 C
Classification (IPC)B60M1/13 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedMay 20, 1987Patent grantedMarch 3, 1992Term endedMarch 3, 2009

Sources & verification

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