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Expired Canadian patentCanada

Stable electrode for electrochemical applications

CA 1088026 A · Owner: Noranda Mines Limited · Inventors: Loutfy, Raouf O.; Ho, Paul P.K.

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

STABLE ELECTRODE FOR ELECTROCHEMICAL APPLICATIONS ABSTRACT OF THE DISCLOSURE:, An electrode having good conductivity low oxygen and, chlorine overvoltage and a low corrosion rate under electrolysis conditions is disclosed. The electrode comprises an electrically conductive substrate made of a material resistant to the electrolyte and the electrolytic products, coated on at least a portion of the surface thereof with a basic coating of a material containing 30-70% by weight of an acid insoluble metal tungstate 15-60% by weight tantalum pentoxide and 5-15% by weight of a noble metal oxide.

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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 October 21, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 21, 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.
FiledNovember 9, 1977
GrantedOctober 21, 1980
Term endedOctober 21, 1997
Patent numberCA 1088026 A
Classification (IPC)C25C7/02 +1 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedNov 9, 1977Patent grantedOct 21, 1980Term endedOct 21, 1997

Sources & verification

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