Method for coating metal surfaces with an aqueous polymer-containing composition, said aqueous composition and use of the coated substrates
CA 2425246 C · Owner: Jung, Christian · Inventors: Jung, Christian; Domes, Heribert; Shimakura, Toshiaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for coating a metal surface with an aqueous composition, characterized in that the composition contains in addition to , water: a) at least one organic film former that contains at least one watersoluble or water-dispersible polymer with an acid number ranging from 5 to 200, b) at least one particulate inorganic compound with an average particle diameter measured by a scanning electron microscope in the range of from 0.005 to 0.3 µ, c) at least one slip additive and/or at least one corrosion inhibitor, d) optionally at least one organic solvent e) optionally at least , one silane and/or siloxane f) optionally at least one cross-linking agent and g) …
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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 October 11, 2001 and granted April 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 11, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 11, 2023.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.