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Expired Canadian patentCanada

Brazed joining with electrical deposition

CA 2551617 C · Owner: Dewes, Richard Charles · Inventors: Voice, Wayne Eric; Dewes, Richard Charles; Bache, Martin Ronald

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Abstract From the Canadian patent

In order to avoid excessive internal stress and micro structure problems inherent with previous fusion welding techniques utilised for component structure fabrication, the present method creates a relatively thin in situ brazing alloy layer upon first and second component edges which are brought together in order to create a component joint. This in situ brazing alloy layer (6, 23, 26) is created by deposition of brazing elements such as copper , or nickel, from an electrical discharge cutting process electrode depletion utilised in order to cut the component edges. A subsequent brazing technique then creates through interstitial migration between that brazing alloy layer and 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 December 23, 2004 and granted November 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2024.
  • 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.
FiledDecember 23, 2004
GrantedNovember 12, 2013
Term endedDecember 23, 2024
Patent numberCA 2551617 C
Classification (IPC)B23H9/00 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedDec 23, 2004Patent grantedNov 12, 2013Term endedDec 23, 2024

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