Tamper proof cap and container
CA 2097514 A1 · Owner: Closure Technologies, Inc. · Inventors: Patterson, Michael C.; Patterson, Michael C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tamper proof cap (10) for use on container (12) having a, threaded neck (11) includes a top (14), an annular skirt (16) depending from the top and a separable strip (22) depending from the skirt. The boundary between the skirt and strip is a line of weakness (24). The skirt has internal threads (18) that complement threads (20) on an upper portion of the container neck. A portion of the separable strip has internal teeth (28) that engage notches (32) on a lower portion of the container neck. At the end of the strip is a tab (26) which is grasped and pulled to sever the strip from the skirt along the line of weakness. The teeth of the strip and the container notches allow the teeth to …
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 December 3, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 3, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 3, 2013.
- 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.