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Expired Canadian patentCanada

Adhesive composition

CA 1281248 C · Owner: Raychem Limited · Inventors: Read, Michael J.; Osborne, Stephen J.; Read, Michael R.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention relates to a heat-curable adhesive coating on a heat-recoverable article, the coating comprising a mixture of substantially solid particles of a first reactive component with separate substantially solid particles of at least a second reactive component, the first and second reactive components being capable of reacting together to effect curing when the article is heat-recovered, and the particles having a size distribution in which no more than 40% by weight of the particles are less than 50 micrometres in size and substantially all the particles are less than 300 micrometres in size. These adhesive coatings are particularly useful as latent curing adhesives for …

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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 March 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 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.
FiledFebruary 13, 1985
GrantedMarch 12, 1991
Term endedMarch 12, 2008
Patent numberCA 1281248 C
Classification (IPC)C09J5/06 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedFeb 13, 1985Patent grantedMarch 12, 1991Term endedMarch 12, 2008

Sources & verification

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