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Expired Canadian patentCanada

Method for preparing an electrode and use thereof in electrochemical processes

CA 1294577 C · Owner: Oranzio Di Nora Impianti Elettrochimici S.P.A. · Inventors: Nidola, Antonio

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Abstract From the Canadian patent

The present invention concerns the method for galvanically preparing electrodes for use as cathodes for hydrogen evolution from alkaline solutions in electrochemical processes said electrodes being constituted by a conductive support and an electrocatalytic coating containing metals of the platinum group and an additional doping compound. The method of the invention comprises applying said electrocatalytic coating from a galvanic plating bath containing the metals to be deposited in the form of soluble salts of metals of the platinum group and further containing said doping compound which is constituted by at least one element selected from the group of: gold cadmium, thallium, lead, tin, …

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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 January 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 21, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 13, 1985
GrantedJanuary 21, 1992
Term endedJanuary 21, 2009
Patent numberCA 1294577 C
Classification (IPC)C25B11/08 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedDec 13, 1985Patent grantedJan 21, 1992Term endedJan 21, 2009

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