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Expired Canadian patentCanada

Pressure sensitive adhesive compositions for use on vinyl substrates

CA 1296477 C · Owner: Mudge, Paul R. · Inventors: Mudge, Paul R.

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

Adhesive compositions having a Tg of -45 to -25°C suitable for application to plasticized polyvinyl chloride comprising 25-48% by weight of a vinyl ester of a alkenoic acid 10-25% by weight ethylene; 40-70% by weight of an acrylic acid ester; 1 to 10% by weight of tertiary octyl acrylamide; and 1 to 10% by weight of a mono-carboxylic acid.

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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 February 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 16, 1988
GrantedFebruary 25, 1992
Term endedFebruary 25, 2009
Patent numberCA 1296477 C
Classification (IPC)C09J4/00 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedFeb 16, 1988Patent grantedFeb 25, 1992Term endedFeb 25, 2009

Sources & verification

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