Tubular foodstuff casing made of cellulose hydrate, in particular synthetic sausage casing
CA 2007232 C · Owner: Winter, Hermann · Inventors: Winter, Hermann; Hammer, Klaus-Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tubular foodstuff casing, in particular synthetic sausage casing, based on cellulose contains a di-n-didecyldimethylammonium compound as a fungicidal agent which is, optionally used in admixture with salts of sorbic acid fungicidal heterocyclic compounds, such as an isothiazolone compound, or glycerol monolaurate. The coating prevents mold attack on the casing.
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 January 5, 1990 and granted June 23, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 5, 2012.
- 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.