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Expired Canadian patentCanada

Abrasion resistant radiation curable coating for polycarbonate

CA 1338076 C · Owner: Sola Group Limited · Inventors: Belmares, Hector

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Abstract From the Canadian patent

Polymerizable and cross-linkable, radiation curable coating compositions particularly designed for deposition as an abrasion resistant, tintable coating poly (bis phenyl A) carbonates. The formulation is a mixture including:, a) 25-94% by weight of a polyfunctional acrylate or methacrylate monomer having at least three acrylate functional groups per molecule or a mixture of such monomers;, b) 3-50% by weight of a monomer selected from N-vinyl derivatives of linear or cyclic secondary amides, tetrahydrofurfuryl acrylate or methacrylate N,N-di(lower alkyl) acrylamide ethylenically unsaturated monosilane, or a mixture of such monomers; and c) 3-40% by weight of an ethylenically unsaturated …

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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 20, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 20, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 27, 1988
GrantedFebruary 20, 1996
Term endedFebruary 20, 2013
Patent numberCA 1338076 C
Classification (IPC)C09D4/02 +2 more

Timeline

Timeline From CIPO dates

198919921995199820012004200720102013Application filedOct 27, 1988Patent grantedFeb 20, 1996Term endedFeb 20, 2013

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