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Expired Canadian patentCanada

Method of bonding a conductive layer on an electrode of an electrochemical cell

CA 1310061 C · Owner: Bowker, Jeffrey C. · Inventors: Singh, Prabhakar; Bowker, Jeffrey C.

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Abstract From the Canadian patent

A dense electronically conductive inter-, connection layer 26 is bonded onto a porous tubular, electronically conductive air electrode structure 16 optionally supported by a ceramic support 22 by (A), providing the air electrode surface (B) forming on a, selected portion of the electrode surface 24 without the, use of pressure, particles of LaCrO3 doped with an element selected from the group consisting of Sr Mg, Ca, Ba, Co, and mixtures thereof, where the particles have a deposit on their surface comprising calcium oxide and chromium oxide; (C) heating the particles with the oxide surface deposit in an oxidizing atmosphere at from 1,300°C to 1,550°C without, the application of pressure, to …

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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 November 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 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.
FiledJanuary 20, 1989
GrantedNovember 10, 1992
Term endedNovember 10, 2009
Patent numberCA 1310061 C
Classification (IPC)H01M4/66 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedJan 20, 1989Patent grantedNov 10, 1992Term endedNov 10, 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.