Cathode element for an electrolysis cell for the production of aluminium
CA 2559372 C · Owner: Aluminium Pechiney · Inventors: Vanvoren, Claude; Basquin, Jean-Luc; Bonnafous, Delphine
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 cathode element for an electrolysis cell bath for the production of aluminium comprising a cathode block (5), made from a carbon material with at least one longitudinal groove on one of the lateral faces thereof and a steel connector bar (6) fixed in said groove such that a part of the bar extends from one end of the block sealed in the groove by means of the introduction of a conducting sealant material between the bar and the block and which contains at least one metal insert the electrical conductivity of which is greater than said steel. According to the invention the insert (16) is arranged longitudinally within the bar and is located at least partly, in 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 March 30, 2005 and granted September 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 30, 2025.
- 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.
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.