Hybrid topcoats
CA 2522010 C · Owner: Bayer Materialscience Ag · Inventors: Mechtel, Markus; Klimmasch, Thomas; Hofacker,Steffen
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 weathering-stable mixtures for preparing organic-inorganic (hybrid) transparent topcoat materials. The hybrid composition comprises an inorganic binder based on polyfunctional organosilanes which contain at least 2 silicon atoms having in each case 1 to 3 alkoxy or hydroxyl groups the silicon atoms being attached by in each case at least one Si-C bond to a structural unit that links the silicon unit; (semi)metal alkoxides and/or hydrolysis and concentration products of these; inorganic UV absorbers selected from the group consisting of ZnO and CeO2; an organic polyol; and one or more solvents.
Read the whole patent
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 October 3, 2005 and granted April 30, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 3, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.