Packaging a strip of material
CA 2274272 C · Owner: Stac-Pac Canada Inc. · Inventors: O'Connor, Lawrence; Davidson, Mark B.; Van Mol, Darrell
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A package of a continuous strip of material comprises a plurality of parallel side by side stacks each containing a length of the strip which is folded back, and forth such that each folded portion of the stack is folded relative to the next, portion about a line transverse to the strip and such that the side edges of the strip, portions are aligned. The strip is continuous through each stack and is connected, by a splice from the end of one stack to beginning of the next stack. The package is, compressed to reduce the height of the stacks and maintained in the compressed condition by an evacuated sealed bag. The preferred package arrangement uses the package for pay off of the strip …
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 June 17, 1998 and granted April 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2020.
- 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.