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Expired Canadian patentCanada

Electrical device having a metal surface bearing a corrosion inhibitor

CA 1045524 A · Owner: Western Electric Company, Incorporated · Inventors: Chandross, Edwin A.; Pryde, Coralie A.

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

Abstract of the Disclosure Electrical device having a metal surface to at least a portion of which electrical connections are to be made by soldering, and having a coating on said portion which protects it against surface alteration which would tend to render such soldering more difficult but through which coating soldering can be effected said coating, comprising a polymer of at least one methacrylate of the general formula, wherein R is selected from the group comprising alkyl radicals having from 1-6 carbon atoms and a glycidyl radical. -i-

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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 January 2, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 1996.
  • 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—
GrantedJanuary 2, 1979
Term endedJanuary 2, 1996
Patent numberCA 1045524 A
Classification (IPC)C23C22/68 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJan 2, 1979Term endedJan 2, 1996

Sources & verification

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