Multilayered cellulose casing, method of manufacture thereof and extrusion head for obtaining said casing
CA 2660709 C · Owner: Viscofan, Industria Navarra De Envolturas Celulosicas, S.A. · Inventors: Oiza Oset, Jose Abel; Garcia Vizcarra, Agustin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cellulose casing for sausages, comprising at least three concentric layers of regenerated cellulose of which the two layers in contact with the outside that is, those with the greatest and smallest diameter respectively are made of colorless transparent viscose, and in which the internal layer or layers are made of regenerated cellulose to which is added other substances such as pigments fumes, flavor extracts, spices or plastic proteins. The object of the invention is a manufacturing method for the cellulose casing obtained by extrusion of at least three concentric layers of regenerated cellulose. Also object of the invention is the circular viscose extrusion head used in manufacturing the …
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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 February 14, 2001 and granted February 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.