Tamper evident container lid
CA 2534059 C · Owner: Robertson, Ronald D. · Inventors: Robertson, Ronald D.; Mac Ewen, George Edward
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tamper evident container lid is provided that includes a lid body configured to cover, the opening of a base container having a top rim. The lid body has a skirt extending therefrom. The skirt, has an annular score line and an annular fold line extending therearound. An outer band of the skirt, extends between the score line and the fold line and an inner band is folded , inwardly to be in opposing relation to the outer band and extends upwardly from the fold line to an upper free edge. When the, container lid is sufficiently applied to the base container such that the free edge slides downwardly past, a top rim of the container achieving a proper closure, an attempt to remove 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 January 26, 2006 and granted March 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 26, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.