Inward embossed panel adjacent to punched hole in top end unit
CA 1106297 A · Owner: Continental Group, Inc. (The) · Inventors: Bartels, Herbert D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An easy opening container construction wherein a pull tape is detachably bonded in a prescribed pattern to a container wall surrounding one or more dispensing openings. The configuration of the detachable bond or seal is accurately controlled by raising the container wall in the area of the detachable bond to a desired bond configuration. By so controlling the configuration of the detachable bond, the bond configuration remains the same, notwithstanding changes in operating conditions during the formation of the bond.
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 August 4, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 1998.
- 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.