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Expired Canadian patentCanada

Strip product forming a surface coating of perovskite or spinel for electrical contacts

CA 2584071 C · Owner: Gutzon Larsen, Joergen · Inventors: Mikkelsen, Lars; Schuisky, Mikael; Gutzon Larsen, Joergen

CIPO record

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Abstract From the Canadian patent

A strip product consists of a metallic substrate such as stainless steel, and , a coating which in turn comprises at least one metallic layer and one reactive layer. The coated strip product is produced by providing the different layers, preferably by coating and thereafter oxidising the coating , to accomplish a conductive surface layer comprising perovskite and/or spinel structure.

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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 November 21, 2005 and granted July 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 21, 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.
FiledNovember 21, 2005
GrantedJuly 9, 2013
Term endedNovember 21, 2025
Patent numberCA 2584071 C
Classification (IPC)B32B15/01 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedNov 21, 2005Patent grantedJuly 9, 2013Term endedNov 21, 2025

Sources & verification

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