Tubular food casings
CA 1046838 A · Owner: Union Carbide Corporation · Inventors: Chiu, Herman S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tubular food casing having a coating adhered to the internal surface thereof comprising the reaction product of a polyethylene imine polymer and a dimer of a ketene having the formula where R and R' are selected from the group consisting of hydrogen and C4-C26 alkyl, aryl and cycloalkyl groups, not more than one of the R and R' groups being hydrogen, and said coating being present in an amount sufficient to impart improved peelability of said coated casing from food products processed therein. 1.
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
- Granted January 23, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 1996.
- 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.