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Expired Canadian patentCanada

Method for forming alloy layer upon aluminum alloy substrate by irradiating with a co.sub.2 laser, on substrate surface, alloy powder containing substance for alloying and silicon or bismuth

CA 1265393 C · Owner: Toyota Jidosha Kabushiki Kaisha · Inventors: Mori, Kazuhiko; Kato, Shinji; Kawasaki, Minoru

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Abstract From the Canadian patent

In this method for forming an alloy layer on the surface of an aluminum alloy substrate, a powder for alloying containing a substance to be, alloyed with the substrate and an element selected from the group consisting of silicon and bismuth, is disposed upon the surface of the aluminum alloy substrate. This powder is then irradiated with a CO2 laser so as to be melted, and fused together with a surface portion of the aluminum alloy substrate so, that these two are alloyed together. The powder for alloying may be a powder of an alloy of the substance to be alloyed with the aluminum alloy substrate and the element selected from the group consisting of silicon and bismuth, or alternatively may …

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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 6, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 12, 1986
GrantedFebruary 6, 1990
Term endedFebruary 6, 2007
Patent numberCA 1265393 C
Classification (IPC)C23C24/10 +1 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedAug 12, 1986Patent grantedFeb 6, 1990Term endedFeb 6, 2007

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