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Expired Canadian patentCanada

Polyvinyl chloride plastisol based curable composition

CA 1331244 C · Owner: Ppg Industries, Inc. · Inventors: Gola, Edward Francis; Desai, Umesh Chandraprasad

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

A curable composition contains: (a) a vinyl chloride plastisol, (b) a diene acrylonitrile copolymer containing activated vinyl groups, and, (c) an organometallic accelerator and free radical initiator combination adapted to promote cure of the fusing plastisol composition. The curable composition is especially suitable for use as an adhesive or sealant.

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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 2, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 2, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 22, 1989
GrantedAugust 2, 1994
Term endedAugust 2, 2011
Patent numberCA 1331244 C
Classification (IPC)C08L27/06 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedSep 22, 1989Patent grantedAug 2, 1994Term endedAug 2, 2011

Sources & verification

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