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Expired Canadian patentCanada

Tape joint compounds utilizing starch stabilized emulsions as binders

CA 1306078 C · Owner: Ablestik Laboratories · Inventors: Palmer, Joseph G.

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

Tape joint compounds are prepared using as binders therefor vinyl ester polymers prepared by conventional emulsion polymerization techniques employing, as the stabilizer therein, an acid converted or enzyme modified starch having a water fluidity of 10 to 85.

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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 August 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 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.
FiledMay 4, 1987
GrantedAugust 4, 1992
Term endedAugust 4, 2009
Patent numberCA 1306078 C
Classification (IPC)C09J131/04 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedMay 4, 1987Patent grantedAug 4, 1992Term endedAug 4, 2009

Sources & verification

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