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Expired Canadian patentCanada

Electrode for electrolysis

CA 1233783 A · Owner: Daiso Co. Ltd. · Inventors: Kawashima, Yukio; Ohe, Kazuhide

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

An anode comprising an electroconductive substrate provided with a (Ru-Sn)02 solid solution coating is useful in brine electrolysis. The improved coating has a composition of (i) 3 to 45 mol% of ruthenium oxide (ii), 0.1 to 30 mol% of at least one member selected from metallic platinum, platinum oxide, and iridium oxide and, (iii) 50 to 96.9 mol% of tin oxide which may be partially replaced by antimony.

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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 March 8, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 8, 2005.
  • 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 30, 1985
GrantedMarch 8, 1988
Term endedMarch 8, 2005
Patent numberCA 1233783 A
Classification (IPC)C25B11/04

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedJan 30, 1985Patent grantedMarch 8, 1988Term endedMarch 8, 2005

Sources & verification

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