Method and apparatus for the treatment of a melt
CA 2333223 A1 · Owner: Copcutt, Robert Charles · Inventors: Dekeyser, Jacky Charles; Fray, Derek John; Copcutt, Robert Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for adding a metal for example sodium, to a melt of a , material for example aluminium, in a vessel, in which a molten compound of the metal or a solution of a compound of the metal is provided in a container (12), the container being positioned outside the vessel the compound is , electrolytically decomposed and ions of the metal are caused to pass through a wall of a solid-state electrolyte (14) which is a conductor therefor from a , first side of the wall to an opposite second side thereof and to combine with , electrons at the second side of the wall and then to flow as molten metal from the container into the melt in the vessel.
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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 14, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 14, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2021.
- 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.