Stage cut patterns for linear drawn composite containers
CA 2453690 A1 · Owner: Sonoco Development, Inc. · Inventors: Case, Manson Drew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A machine and process for forming a container are disclosed. In one method, at least one layer forming the container is directed to a first cutting device, which forms a cut at least partially through the at least one layer. A downstream, second cutting device forms a cut at least partially through the at least one layer, such that the cuts cooperate to form a cut substantially the width of the at least one, layer. By only cutting a portion of the at least one layer with the first cutting, device, the machine can pull or direct the at least one layer therethrough while the, second cutting device cuts the remaining portions of the at least one layer so that, the individual containers …
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 December 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 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.