Leak-resistant polymeric foam containers
CA 2482018 C · Owner: Pactiv Corporation · Inventors: Nordland, Kate E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A leak-resistant hinged polymeric foam container comprises a base and a lid. The , base comprises a bottom wall and a sidewall that encompasses and extends generally , upwardly from the bottom wall. The sidewall comprises a first scaling area and a first , generally upwardly projecting wall. The lid includes a second sealing area that is adapted , to engage the first sealing area upon securing the lid and the base. The container forms a , locking structure for securing the lid and the base. The base and the lid comprise , polymeric foams. The container may include a hinge that hingedly connects the base to , the lid.
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 September 16, 2004 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 16, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 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.