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Expired Canadian patentCanada

Method for changing anode in an electrolytic aluminium production cell including adjusting the position of the anode and servicing machine therefor

CA 2583471 C · Owner: Van Acker, Alain · Inventors: Van Acker, Alain

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention concerns a method for changing the anode of an igneous electrolytic aluminium production cell (2) which consists in using at least one anode handling tool (13) comprising a positioning member (13b) and a gripping member (13a). The invention is characterized in that during the operations for replacing a specific used anode (20') with a replacement anode (20'') it consists in determining the position of the replacement anode (20'') from a specific set of measurements of the position of a fixed point Po located on at least one anode handling tool (13) relative to a specific set of reference points P located on separate specific objects of the anode handling tool. The invention …

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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 October 12, 2005 and granted April 23, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 12, 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.
FiledOctober 12, 2005
GrantedApril 23, 2013
Term endedOctober 12, 2025
Patent numberCA 2583471 C
Classification (IPC)C25C3/06 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedOct 12, 2005Patent grantedApril 23, 2013Term endedOct 12, 2025

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.