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Expired Canadian patentCanada

Clad alloy substrates and method for making same

CA 2569855 C · Owner: Ati Properties, Inc. · Inventors: Tarhay, Mark A.; Bergstrom, David S.; Schott, Kris J.

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Abstract From the Canadian patent

A method for producing a single-clad or multiple-clad product includes providing a welded assembly comprising a cladding material disposed on a substrate material. Both the substrate material and the cladding material are individually selected alloys. At least a first edge of the cladding material of the welded assembly does not extend to a first edge of the substrate material and thereby provides a margin between the first edges. A material that is an alloy having hot strength greater than the cladding material is within the margin and adjacent the first edge of the cladding material. The welded assembly is hot rolled to provide a hot rolled band and the material , within the …

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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

  • Filed May 19, 2005 and granted March 15, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 19, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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 19, 2005
GrantedMarch 15, 2016
Term endedMay 19, 2025
Patent numberCA 2569855 C
Classification (IPC)B23K20/04

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Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedMay 19, 2005Patent grantedMarch 15, 2016Term endedMay 19, 2025

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