Radiation curable acryloxyfunctional silicone coating composition
CA 2018237 C · Owner: Wright, Antony P. · Inventors: Wright, Antony P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a silicone coating composition which, when cured on a solid substrate either by ultraviolet or electron beam radiation provides a transparent abrasion resistant coating firmly adhered thereon. The silicone coating is prepared by reacting in a polar solvent solution at least one multifunctional acrylate monomer with an amino-organofunctional silane to form a Michael adduct and optionally adding an acid to the reaction mixture and, thereafter adding colloidal silica.
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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
- Filed June 5, 1990 and granted May 9, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.