Tamper indicating closure having retaining hoop with relief windows
CA 2065407 C · Owner: Anchor Hocking Corporation · Inventors: Hayes, Thomas H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A closure (11) for a container (10) has a tamper indicating band (22) with a band retainer (29) in the form of an apertured flap or hoop which is hinged to the lower edge (30) of the band. A series of windows (36) open through the retainer extending, toward but not to its distal edge (32). As the retainer is turned inside out from its as-molded position to its use position its distal, and/or outer edges deform to relieve compression and permet the retainer to be inverted by direct downward pushing force. As a result of the deformation, the retainer in its use position may depending on the number and relative size of windows have an, advantageous polygonal peripheral shape rather than a …
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 August 22, 1990 and granted December 1, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 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.