Reinforced plastic foam cup, method of and apparatus of manufacturing same
CA 2811167 C · Owner: Prairie Packaging, Inc. · Inventors: Hollis, Robert W.; Stamatiou, Dimitri
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a method of manufacturing a reinforced plastic foam cup and involves providing a plastic foam cup having a bottom wall at a bottom end of the cup and a conical shaped side wall integrally formed at one end with the bottom wall and extending from the bottom wall to an open top end along a first line. The method involves positioning the cup in an upside down position and positioning a reinforcing member along the first line. The reinforcement member includes a concavely shaped top edge a convexly shaped bottom edge, and a center point along a central vertical axis and is attached by a pressure sensitive adhesive layer covering substantially the entire inner surface of …
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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 May 10, 2006 and granted December 29, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2026.
- 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.