Dual-ovenable heat-sealable packaging film
CA 2438265 C · Owner: Cryovac, Inc. · Inventors: Berrier, Arthur Leroy; Ebner, Cynthia Louise
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dual ovenable film having a first layer comprising one or more polyamides and a second layer comprising one or more polyamides. The first layer forms the first outer surface of the film. The second layer has a melting point of at least about 210°C. The film is capable of forming a water-containing package by providing two 4 inch by 6 inch sheets of the film each having four perimeter sides placing the sheets in superimposed, coextensive arrangement having the first layers of the films in contact with each other and heat sealing three perimeter sides of the sheets together using a 1/8-inch wide sealing bar at a temperature o~ 290°F a dwell time of 0.5 seconds, and a sealing pressure of 40 …
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 August 26, 2003 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 2025.
- 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.