Multi-layer films having uniform content
CA 2581851 C · Owner: Aquestive Therapeutics, Inc. · Inventors: Fuisz, Richard C.; Fuisz, Joseph M.; Myers, Garry L.
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 edible multi-layer films (10) that dissolve in water. In particular, the edible multi-layer films (10) have a first watersoluble film layer (100) and one or more additional water-soluble film layers (200) in at least partial face-to-face engagement with the first film layer (100). The film layers (100,200) include a polymer composition which contains polyethylene oxide alone or in combination with at least one water-soluble polymer. The edible multi-layer films (10) may include pockets defined between the layers (100,200) that house an active component. Upon addition of water the multi-layer film (10) dissolves, thereby releasing the active component …
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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 28, 2005 and granted November 1, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 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.