Tamper evident cap
CA 2478291 A1 · Owner: Parker, Ian Malcolm · Inventors: Parker, Ian Malcolm
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tamper evident cap for a container for pourable substances. The cap comprising a pouring neck (10) for attachment to the opening of a container and a closure (40) for the mouth of the neck. The neck comprising a substantially closed chamber (54) surrounding a pouring aperture. The chamber having an opening for communication with the aperture and being adapted to define a well in the upright condition of the container wherein in use a pourable substance in the chamber is visible from the exterior thereof. The cap has a female thread and the neck has a male thread and the closure is adapted to prevent communication between the chamber and the aperture.
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 7, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 2025.
- 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.