Packaging foil
CA 1253065 A · Owner: Printal Oy · Inventors: Makilaakso, Antero
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention concerns a packaging foil for foods and other everyday goods, said foil being composed of two or more barrier layers as well as plastic coatings between the barrier layers and which form the outer surfaces of the foil; in addition, the patent provides for a method of manufacturing the foil. With the object of achieving a thin stiff and, accordingly advantageous foil the packaging foil according, to the invention has been formed by joining together and sealing sheets containing one barrier layer one side of said, sheets having been covered with a layer of plastic intended for the protection of the inner layer and outer layer and the other side with a layer of plastic intended …
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 25, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 25, 2006.
- 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.