Laminated closure for a plastic container
CA 1306705 C · Owner: Continental Can Company, Inc. · Inventors: Roth, Donald J.; Hekal, Ihab M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This relates to a closure for a plastic container wherein the closure is to be heat bonded to the container. The closure is of a laminated construction and includes an outer structural layer of plastic material a, combined electric heat inductive and barrier layer, and an inner bond forming plastic material layer. The bond forming inner layer is thin as compared to the thickness of the structural outer layer. The barrier layer is formed of a metal foil, preferably aluminum and is also quite thin.
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 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 2009.
- 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.