Multilayer dose
CA 2557590 C · Owner: Roy, Hugues-Vincent · Inventors: Thomasset, Jacques; Roy, Hugues-Vincent
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 multilayer dose having an axis of symmetry which is intended for the production of multilayer objects by means of compression moulding. The inventive dose comprises a first synthetic resin and a thin functional layer (3) which is trapped in the first resin said layer (3) representing less than 20 % of the volume of the dose. The multilayer dose is characterised in that the layer (3) forms the shell of a body that revolves around the axis of symmetry and in that the distance between the layer and said axis is variable.
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, 2005 and granted August 27, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 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.