Extrudable vinylidene chloride polymer compositions
CA 2331495 A1 · Owner: The Dow Chemical Company · Inventors: Lee, Eric K. C.; Naumovitz, John A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vinylidene chloride polymer composition comprises (1) a vinylidene chloride polymer wherein the major component is a vinylidene chloride monomer and the remainder is one or more monoethylenically unsaturated monomer copolymerizable with the vinylidene chloride monomer, (2) a glycerol ester (3) a silicone , polymer or a polyolefin and optionally, (4) an epoxidized processing aid. The vinylidene chloride composition can be fabricated into flexible and rigid containers, both in monolayer and multilayer structures for use in the preservation of food, drink medicine and other perishables.
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 April 28, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 28, 2021.
- 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.