Roll top bag constructions
CA 2425658 A1 · Owner: Velcro Industries B.V. · Inventors: Shepard, William H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gusseted bag of disposable packaging material has a roll-top closure comprising two releasably engageable fastener components (20 24). Each , fastener component comprises a plastic base layer (52) carrying either hook or loop elements. In some cases, one component (24) is secured to one face (26) of a rollable top of the bag, and the other component is carried on a flexible flap secured to a lower portion of an opposite face (22) of the bag. In another embodiment, one fastener component (24) extends in a strip from an upper edge of the bag down one face (26) of the bag and the other fastener , component (20) extends in a strip from an upper edge of the bag down an opposite face …
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 10, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 10, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2023.
- 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.