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Expired Canadian patentCanada

Electrode catalyst and method for producing the same

CA 2805293 C · Owner: Nissan Motor Co. Ltd. · Inventors: Yamamoto, Shinji

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

Provided is a method for suppressing corrosion of a carbon material which acts as a carrier in a catalyst layer of PEFC. The present invention relates to an electrode catalyst produced by subjecting a carbon material having a noble metal catalyst supported thereon to heat treatment under inert gas atmosphere.

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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 21, 2006 and granted June 23, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 21, 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 21, 2006
GrantedJune 23, 2015
Term endedFebruary 21, 2026
Patent numberCA 2805293 C
Classification (IPC)H01M4/92

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedFeb 21, 2006Patent grantedJune 23, 2015Term endedFeb 21, 2026

Sources & verification

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