Retortable closure for plastic container
CA 2022340 C · Owner: Montgomery, Jerold Wayne · Inventors: Pezzoli, Paul Anthony; Montgomery, Jerold Wayne; Osip, Thomas Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a closure which permits the opening of a membrane sealed nutritional or pharmaceutical product container in a single action motion which also maintains a hermetic seal under retort conditions. This closure includes a generally cylindrical side wall having threads along the inner surface thereof and retaining means for cooperative engagement with the lip of a plastic container, and a top having an annular rim portion and a center portion, with the top having a lower surface attached to a heat-sealable barrier able to be secured to the plastic container with the, top also having a center portion removal means. A method is also disclosed for providing a hermetic seal on …
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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 July 31, 1990 and granted June 25, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 31, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2012.
- 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.