Cook-in film with improved seal strength
CA 2036554 C · Owner: W.R. Grace & Co.-Conn. · Inventors: Friedrich, Steven George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved hot and cold heat seals are obtained in a multiple layer cook-in film from which packages such as bags or casings can be made. The films have a first food contact layer that adheres during cook-in to a contained meat product. The first layer comprises a blend of a first and a second polyamide, preferably with a small amount of an antioxidant.
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 February 18, 1991 and granted July 17, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 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.