Retortable light excluding container and methods of using same
CA 2519965 C · Owner: Stokesbury, Elwood L. · Inventors: Yuan, Jay Z.; Stokesbury, Elwood L.; Barca, John G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A container includes a gripping groove and a panel structure that allows it to withstand retort or heat sterilization of a low acid liquid nutritional product contained therein. The container can be formed of a multilayer material that has titanium dioxide and iron oxide in an intermediate regrind layer and in at least one of its inner and outer layers. The titanium dioxide and iron oxide are provided together in the same meltable pellets which are , used for forming the container.
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 March 19, 2004 and granted July 16, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 19, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 2026.
- 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.