Film structures containing oxygen scavenging compositions and method of application
CA 2374680 A1 · Owner: Hunt, Thomas F. · Inventors: Miller, Daniel S.; Hunt, Thomas F.; Galloway, Deane
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polymeric film structure having one or more polymeric layers wherein an oxygen scavenging composition is affixed to the inside surface layer of the structure. The structure having usefulness in the packaging of foods and nonfood articles wherein an oxygen free or a relative oxygen free environment is desirable for the contained article. The oxygen scavenging composition comprising a primer layer; a pigmented layer an oxygen scavenger layer and an , overcoat layer wherein each layer is applied one or more times to the polymeric film structure by a printing method preferably a flexographic printing process.
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 May 5, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 5, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 2022.
- 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.