Cuboidal pack, especially hinge lid pack for cigarettes
CA 2035993 C · Owner: Bretthauer, Hans-Jurgen · Inventors: Focke, Heinz; Bretthauer, Hans-Jurgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
It is a problem with hinge lid packs for cigarettes that, the pack content (cigarette block 29) often has a smaller depth than the interior space of the pack so that the, cigarette block (29) has to be supported by a filling piece. This filling piece is provided in the form of a supporting body (31) which is formed by appropriate folding of a collar front wall (25) from a collar arranged in the pack. An upper portion of the collar front wall (25) is inwardly set back, such that a supporting wall (32) abuts the (smaller) cigarette block (29). Collar side tabs (26 27) connected to the collar front wall (25) extend across the full depth of the interior space of the pack and are connected 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 February 8, 1991 and granted February 6, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 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.