Surface coated non-carbon metal-based anodes for aluminium production cells
CA 2317595 A1 · Owner: Moltech Invent S.A. · Inventors: De Nora, Vittorio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A non-carbon, metal-based, high temperature resistant electrically conductive , and electrochemically active anode of a cell for the production of aluminium has a metal-based oxidation-resistant substrate to which an adherent multilayer coating is applied prior to its immersion into the electrolyte and start up of the electrolysis by connection to the positive current supply. The multilayer coating is obtainable from one or more applied layers selected from: a liquid solution, a dispersion in a liquid or a paste a suspension in a liquid , or a paste, and a pasty or non-pasty slurry and combinations thereof, with or , without heat treatment between two consecutively applied layers. At …
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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 January 19, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 19, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 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
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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.