Colored cellulosic casing with clear corridor
CA 2047477 C · Owner: Viskase Corporation · Inventors: Sherry, Jeffrey Brian; Hansen, James Richard; Quinones, Xavier Jose
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sausage casing comprising an elongated cellulosic tube having less than about 100 wt. % moisture based upon the bone dry weight of cellulose and having first and second longitudinal portions, and a colorant or opacifier which is longitudinally and continuously dispersed throughout the wall of at least one of these portions to provide it with different optical properties which are useful e.g. for quality control and identification of color development meat type and particle definition and/or to provide an attractive package appearance. In a preferred embodiment a, sausage is encased where the surface area of the second portion is less than or equal to the first portion and these portions …
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 July 19, 1991 and granted April 21, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2013.
- 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.