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Expired Canadian patentCanada

Electrode for electrolytic cell

CA 2593322 C · Owner: Woltering, Peter · Inventors: Woltering, Peter; Beckmann, Roland; Dulle, Karl Heinz

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 relates to an electrode for electrochemical processes for gas production, which in the installed state is located parallel and opposite to an ion exchange membrane and consists of a multitude of horizontal lamellar elements which are structured and three-dimensionally shaped and are in contact with only one surface with the membrane wherein the lamellar elements , have grooves and holes the major part of the holes being placed in the grooves and the surfaces of such holes or part thereof are located in the grooves or extend into the grooves. In such a way the holes are ideally placed in the contact area of the respective lamellar element with the membrane.

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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 February 10, 2006 and granted January 15, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 10, 2026.
  • 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.
FiledFebruary 10, 2006
GrantedJanuary 15, 2013
Term endedFebruary 10, 2026
Patent numberCA 2593322 C
Classification (IPC)C25B11/03 +1 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedFeb 10, 2006Patent grantedJan 15, 2013Term endedFeb 10, 2026

Sources & verification

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