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Expired Canadian patentCanada

Toughened epoxy composition

CA 1266348 C · Owner: Drain, Kieran F. · Inventors: Drain, Kieran F.

CIPO record

Overview

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

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Abstract From the Canadian patent

A toughened ambient temperature cure epoxy adhesive resin having excellent adhesion to metals polyurethane, and fibre-reinforced polyesters contains polyepichlorohydrin in the resin components. The cured composition has good sandibility flexi-, bility and toughness superior to conventional epoxies.

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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 27, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 27, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 14, 1984
GrantedFebruary 27, 1990
Term endedFebruary 27, 2007
Patent numberCA 1266348 C
Classification (IPC)C08L63/00 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedNov 14, 1984Patent grantedFeb 27, 1990Term endedFeb 27, 2007

Sources & verification

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