Packaging with a vent region
CA 2588510 C · Owner: Jones, Beth · Inventors: Jones, Beth; Burke, Andrew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Packaging comprises polymer film (1) with portions of the film (1) sealed together to form an enclosure for the food stuff said sealed portions being , sealed by a film-to-film seal except in a vent region (5) where a lacquer layer (6) is bonded to each portion of film before said portions are sealed together with the lacquer layers cohering the seal strength of the lacquer-to-, lacquer interface (6) being similar to that of the film-to-film interface under predetermined storage conditions and the seal strength of said lacquerto-lacquer interface (6) being reduced compared with that of the film-to-film interface at temperatures above those expected under said predetermined storage …
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 November 15, 2005 and granted May 21, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 15, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.