Pinch closure bags with opening feature and method of manufacturing them
CA 1208607 A · Owner: Bemis Company, Inc. · Inventors: Jacobs, Richard W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A paper bag having a pinch closure provided with a tab extending from within the bag between the portions of the walls of the bag in the pinch closure and projecting out of the pinch closure, the projecting portion of the tab being adapted to be grasped and pulled to tear the bag open at the pinch closure, and a method of manufacturing it involving provision of a bag tube, opening up the tube at one end and in-, serting the tab in the tube.
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 July 29, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 2003.
- 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.