Brazing product and method of its manufacture
CA 2493038 A1 · Owner: Wijenberg, Jacques Hubert Olga Joseph · Inventors: Wittebrood, Adrianus Jacobus; Mooij, Joop Nicolaas; Wijenberg, Jacques Hubert Olga Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a brazing sheet product comprising a core sheet a , clad layer on said core sheet made of an aluminium alloy containing silicon in an amount in the range of 4 to 14% by weight an optional layer comprising , nickel on the outersurface of said clad layer and a diffusion layer , comprising nickel-tin alloy on the outer surface of said nickel layer. The invention further relates to a method of manufacturing such a brazing product comprising the process step of plating different metal layers and subjecting the plated brazing product to an annealing treatment by holding the plated brazing product at a temperature in the range of 100 to 500~C for a period of 1 sec. …
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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 July 21, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 21, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.