Use of an organic sol of cerium in paints, particularly lacquers and varnishes
CA 2477461 C · Owner: Echalier, Bruno · Inventors: Bousseau, Jean-Noel; Echalier, Bruno; Fauchadour, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the use of an organic sol of cerium in paints particularly lacquers or varnishes to improve the durability thereof. The sol applied can more particularly be a sol comprising an ampiphilic acid system an organic phase and particles in the form of crystallite agglomerations of which the d80 more advantageously the d90, is at most 5 nanometres 90 % (in mass) of the agglomerations comprising 1 to 5 preferably 1 to 3 crystallites. The paints with an organic sol of cerium have an improved water content and improved mechanical properties.
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 February 26, 2003 and granted May 15, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2025.
- 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.