Packaging
CA 2589035 C · Owner: Fairweather, John · Inventors: Adams, Michael Kenneth John; Fairweather, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A package has a flexible top wall (3) joined at its periphery (6) to flexible side walls (4, 5) to form an enclosure the top wall (3) being formed with a , line of weakness (7) which is adapted to be torn to create an opening the , tear being confined between the peripheral join (6). The side walls (4 5) may , have transverse seals (1, 2), and top and bottom walls (3) folded inwards as gussets, and the line of weakness (7) extends substantially centrally along the fold line of the gusseted top wall (3) between the two transverse seals (1, 2). The package is easily gripped in both hands one either side of the , line of weakness (7) with a thumb on each side to press downwards and create …
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 12, 2005 and granted February 4, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.