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Expired Canadian patentCanada

Pre-mixed catalyzed vinyl acetate co-polymer adhesive composition

CA 1136792 A · Owner: National Casein Of New Jersey · Inventors: Woo, Ming C.

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 pre-mixed adhesive composition comprised of a vinyl acetate co-polymer emulsion including a cross-linking catalyst and a cross-linking inhibitor providing a good cured water resistant Type II bond and extended shelf life so that the adhesive composition will not gel over an extended period of time and will therefore be usable for direct gluing application to semi-porous and porous substrates.

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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 November 30, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 30, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 17, 1978
GrantedNovember 30, 1982
Term endedNovember 30, 1999
Patent numberCA 1136792 A
Classification (IPC)C09J131/04 +2 more

Timeline

Timeline From CIPO dates

1979198219851988199119941997Application filedAug 17, 1978Patent grantedNov 30, 1982Term endedNov 30, 1999

Sources & verification

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