Bag with separate attached zipper and method of making
CA 1316877 C · Owner: Minigrip, Inc. · Inventors: Van Erden, Donald L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved reclosable bag structure such as formed out of plastic film or laminations thereof with front and back wall panels attached at their bottom inside edges and reclosable rib and groove profile fastener strips along the inner surface of the panels at the bag top with at least one of the strips secured by a bonding element that has a limited area to secure the fastener strip only at its upper edge at a location above the profile or alternatively the strip uses a bond preventing element that permits only the upper edge of said strip to be secured to said panel at a location above the profile with this manner of securing accommodating outward movement of the film panel to apply a …
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
- Granted April 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 27, 2010.
- 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.