Self-standing flexible bag
CA 2174499 A1 · Owner: Flecknoe-Brown, Anthony Earl · Inventors: Flecknoe-Brown, Anthony Earl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flexible, self-supporting shaped plastics bag has an open end surrounded by a rigid flange a tubular or frusto-conical side wall depending from the flange to form a generally tubular portion and a base joining the side wall through a radiused portion the side wall being provided with, a plurality of reinforcing ribs extending longitudinally along the tubular portion and through the radiused portion. The thickness of the ribs increases progressively from the open end portion of the container through the radiused portion at which the ribs form elongated knuckles reinforcing the junction of the side wall and base and enabling the container to stand on its base.
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 October 21, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 21, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 2016.
- 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.