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Expired Canadian patentCanada

Electric storage battery with valve metal electrodes

CA 1072627 A · Owner: Diamond Shamrock Technologies S.A. · Inventors: Spaziante, Placido M.; De Nora, Vittorio; Nidola, Antonio

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Electric storage batteries with titanium or other film forming metal anodes and cathodes are provided. The cathodes are coated with mixed oxide coatings of a film forming metal oxide containing a platinum group metal oxide catalyst which, coatings may contain oxides of other metals to alter the breakdown voltage and increase the oxygen overpotential of the cathodes while preserving a low bromine and chlorine overpotential. The anodes may be uncoated titanium or other film forming metals or film forming metals with a silver coating thereon. Bipolar film forming metal anodes and cathodes are provided carrying a mixed oxide coating on the cathodic face and either no coating or a silver coating …

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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 February 26, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedFebruary 26, 1980
Term endedFebruary 26, 1997
Patent numberCA 1072627 A
Classification (IPC)H01M4/64 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedFeb 26, 1980Term endedFeb 26, 1997

Sources & verification

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