Improvements in and relating to closure for containers
CA 2012644 C · Owner: Obrist Closures Switzerland Gmbh · Inventors: Davis, Eugene Edward; Stubbs, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A TR closure of plastics material for application to a standard form of container with a projecting neck ring as herein defined. The closure has a top an, annular skirt depending from the top a TR band, connected to the skirt by frangible means and an annular expandable or adjustable safety flap adapted when in operative position to engage with the underside of the neck ring of the container.
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 March 20, 1990 and granted May 14, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 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.