Active film adhered to flexible packages and method thereof
CA 2561310 C · Owner: Sagona, Peter J. · Inventors: Freedman, Jonathan R.; Sagona, Peter J.; Giraud, Jean Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method of attaching an active film (5) onto a flexible package comprising the steps of heating a foil (2); applying an active film (5) to the foil (2); and applying sufficient pressure to the active film (5) and foil (2) combination and sufficient heat to the foil (2) so that active film (5) adheres to the foil (2). In one example the active , film (5) comprises two components and wherein the two components are an active agent and a polymer. In another example the active agent is an absorbing , material.
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 March 28, 2005 and granted April 23, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 28, 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.