Carton opening feature
CA 2449101 A1 · Owner: Darin, Neil E. · Inventors: Darin, Neil E.; Guzowski, Christopher P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A carton is provided having a door that is shiftable from a closed position to an open position to permit access to an interior of the carton. The door includes a gripping tab for opening the door. The gripping tab is restricted from movement by a blocking member prior to the initial shifting of the door from the closed position to the open position. Upon sufficient movement of the gripping tab the blocking member is removable to permit shifting of the door from the closed position to the open position thereby, permitting access to the interior of the carton.
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 November 13, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 13, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 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.