High-strength gusseted lid for a food container
CA 2202699 C · Owner: Sagan, Michael J. A. · Inventors: Hayes, Thomas J.; Gomoll, James N.; Sagan, Michael J. A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lid for a plastic food container includes a continuous body portion and a continuous rim encompassing and projecting laterally outwardly from the body portion. The body portion includes a peripheral region a transition region and a, central region. The peripheral region encompasses the transition region and the central region, extends between the continuous rim and the transition region andslopes downward at a first acute angle from the continuous rim to the transitionregion. The transition region encompasses the central region extends between the, peripheral region and the central region and includes first and second transition portions. The first transition portion intersects the …
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 15, 1997 and granted April 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2019.
- 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.