Process for the electrolysis of a molten charge using inconsumable bi-polar electrodes
CA 1083523 A · Owner: Swiss Aluminium Ltd. · Inventors: Alder, Hanspeter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the production of metals by the electrolysis of metal compounds dissolved in a molten electrolyte in particular for the, production of aluminum from aluminum oxide. The electric power is passed through a multi-cell furnace with at least one inconsumable bi-polar electrode, made of electrode materials which are compatible with one another. The anions in particular, the oxygen ions of the dissolved metal compounds have their charges removed on the surface of the electron conductive ceramic oxide anode and the metal ions, in particular the aluminum ions have their charges removed on the surface of the cathode which is made of a different material from that used for the anode …
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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 August 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 12, 1997.
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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.