Packaging container and blank for manufacture of the same
CA 2045807 C · Owner: Tetra Alfa Holdings S.A. · Inventors: Mandersson, Ragnar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a packaging container of parallelepiped type with a, blank for manufacture of the same there is, limited by, means of fold lines a fold-out corner flap which contains, a pouring opening and serves as a pouring lip when pouring out contents in liquid form from the packaging container. In order to ensure that air can flow into the packaging container in conjunction with the pouring out of the contents the upper end wall of the packaging container is provided with weakening lines, which diverge from the pouring opening and weaken the material to such an extent that the area at the rear end of the pouring opening stands out in a raised position obtained on the opening of the packaging …
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
- Filed June 27, 1991 and granted December 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 27, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2013.
- 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.