Microcapsule with a permeable wall, said wall containing particulate matter which acts as a wick
CA 2593641 C · Owner: The Central Science Laboratory (Csl) Representing The Secretary Of State For Environment, Food And Rural Affairs · Inventors: Nadian, Allan Kunamoney
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a microcapsule having a permeable wall, said microcapsule comprising an active component encapsulated therein, and a particulate matter located in a wall thereof, said particulate matter being such that the particulate matter acts as a wick allowing the active component to move out of the microcapsule thereby rendering , the wall permeable. The active component may be a pharmaceutical, a cosmetic or an agrochemical and the , microcapsule may be used for delivery of the pharmaceutical cosmetic or agrochemical.
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 January 19, 2006 and granted July 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2026.
- 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.