Oxygen scavenging compositions and packaging comprising said compositions
CA 2893166 C · Owner: Plastipak Packaging, Inc. · Inventors: Deshpande, Girish Nilkanth; Rost, John; Govindarajan, Venkat
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The instant invention concerns a composition comprising a base polymer at least one compound of the formula E-(L-E)x wherein: E is formula (I) or formula (II) and L is a linking group; and at least one transition metal in a positive oxidation state. The invention also concerns packages containing walls comprising such compositions methods of forming such packages, and methods of packaging an oxygen-sensitive item within such a package.
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 15, 2006 and granted February 6, 2018. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 15, 2026.
- 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.