Carton blank, especially for use in containers for food products
CA 1331736 C · Owner: Merdem, Knut · Inventors: Hansen, Terje; Merdem, Knut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A carton, blank, especially for use for containers for food products is composed to provide maximum safety against leakage from the container, and to safeguard against gas passage through the container wall. For this object the carton blank is built up as a laminate of paperboard (1) and, paper (2) of the greaseproof kind an adhesive layer, such as, a polyolefine layer (3) being used and said basic member (1, 2, 3) is on both sides provided with external layers (4 5), of polyolefine. The adhesive layers (3 4, 5) may, additionally, have dye pigments added to provide impermeabililty to light.
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 30, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 30, 2011.
- 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.