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Expired Canadian patentCanada

Pressure-sensitive adhesives based on similar polymers

CA 1285676 C · Owner: Avery International Corporation · Inventors: Lin, Kenneth S.C.

CIPO record

Overview

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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, A pressure-sensitive adhesive is formed from a high-molecular-weight alkyl acrylate polymer with from 2 to about 4 carbon atoms on the alkyl side chain and, is plasticized by an essentially-liquid low-molecular-, weight alkyl acrylate polymer which polymers preferably, have identical monomer contents.

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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 July 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 12, 1986
GrantedJuly 2, 1991
Term endedJuly 2, 2008
Patent numberCA 1285676 C
Classification (IPC)C08L33/02 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedMarch 12, 1986Patent grantedJuly 2, 1991Term endedJuly 2, 2008

Sources & verification

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