Method for the production of capsules with a heat-shrinkable skirt and capsules obtained according to said method
CA 2545014 C · Owner: Granger, Jacques · Inventors: Luciani, Andre; Granger, Jacques
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The method comprises a) an extrusion stage wherein a extruded tube made of a thermoplastic material (20) is formed by extrusion with the aid of an extrusion die having a diameter D0 a slit width E0 and a section S0; b) a stage wherein the extruded tube (20) is radially expanded in order to form a radially expanded tube (23) having a diameter D2 a thickness E2 and corresponding section of area S1; c) a truncating stage wherein the expanded tube (23) is broken down into tube portions (24); d) a stage in which the tube portions (24) are formed in such a way that a heat-shrinkable cap or capsule is obtained (1) and in which an axial drawing stage is incorporated between extrusion stage a) and …
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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 November 8, 2004 and granted May 15, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2024.
- 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.