Method for coating powders
CA 2579581 C · Owner: Calderone, Marilyn · Inventors: Rodier, Elisabeth; Calderone, Marilyn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for coating powdery solid active substances characterized in that it comprises the following steps: a) providing (2; 3; 4) a mixture comprising at least one coating agent wherein is dissolved a supercritical or subcritical fluid in conditions of temperature and pressure enabling said fluid to be maintained in supercritical or subcritical conditions; b) providing (7) individualized moving particles of at least one powdery solid active substance; c) contacting (8) the mixture and the moving individualized particles of active substance in conditions of temperature and pressure ensuring simultaneously expansion of the supercritical or subcritical fluid and its …
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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 September 8, 2005 and granted December 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 8, 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.