Tamper-evident closure for wide mouth container
CA 2019280 C · Owner: Robbins, Robin M. · Inventors: Robbins, Robin M.; Mack, Anthony C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tamper-evident closure for a wide mouth container. The closure member has a central panel and a downwardly opening rim cavity encircling the central panel and adapted to receive therein a top rim of the food container. The rim cavity is defined by a pair of upstanding, radially spaced skirt segments connected at their respective upper edges by a top rim segment. A radially outer one of the skirt segments has adjacent a lower edge thereof a radially inwardly projecting and circumferentially extending first flange adapted to snugly fit under and frictionally engage the lip on the food container. In addition, the radially outer skirt also has a radially outwardly projecting second flange …
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 June 19, 1990 and granted June 9, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 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.