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Expired Canadian patentCanada

Unique epoxy resin compositions and composite molded bodies filled therewith

CA 1263496 C · Owner: General Electric Company · Inventors: Cox, Frederick E.; Markovitz, Mark; Torossian, Kevork A.

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Abstract From the Canadian patent

Abstract of the Disclosure A thermosetting resin composition of an epoxy resin mixture of 1,2 epoxy resin having at least two epoxide groups per molecule and a polyglycol diepoxide having viscosity of 2,000-5,000 centipoises at 25°C and in addition small but effective amounts of both a catalytic hardener and an accelerator has special utility in the production of composite molded bodies of electrical insulation having thermoplastic shells because of its unique combination of properties including thermal stability, thermal-cycling crack resistance high, impact strength, toughness, room-temperature curability and bondability to both thermoplastic and metallic surfaces, and because it does not …

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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 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 28, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 25, 1985
GrantedNovember 28, 1989
Term endedNovember 28, 2006
Patent numberCA 1263496 C
Classification (IPC)H01B3/40 +1 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedJuly 25, 1985Patent grantedNov 28, 1989Term endedNov 28, 2006

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