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Expired Canadian patentCanada

Polymer coatings and methods of applying same

CA 1187352 A · Owner: Western Electric Company, Incorporated · Inventors: Graham, Lionell

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Abstract of the Disclosure, Polymeric coatings can be applied to substrates such as metal foils by first coating the foil with a wetting hydrosol followed by applying a coupling agent thereto and thereafter coating the substrate with the desired polymer.

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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 May 21, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 31, 1981
GrantedMay 21, 1985
Term endedMay 21, 2002
Patent numberCA 1187352 A
Classification (IPC)B05D3/10 +2 more

Timeline

Timeline From CIPO dates

1982198519881991199419972000Application filedJuly 31, 1981Patent grantedMay 21, 1985Term endedMay 21, 2002

Sources & verification

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