Packing container blank, a method for the manufacture of the same and a packing container made from the blank
CA 1209552 A · Owner: Tetra Pak International Ab · Inventors: Billberg, Alf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Packing container blanks for gable-top packages are cut out of a material web which, up to now, has caused an appreciable amount of waste material,since the edges of the blanks are irregular and cannot be "dovetailed" into one another. In accordance with the invention a packing container blank is provided with partly straight, parallel lateral edges partly transverse edges, which are profiled according to a regular pattern which is repeated over the width of the blank, As a result the profiled edges of the blanks too can be formed without wastage.
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 12, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 12, 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.