Expired Canadian patentCanada
Blank for a packaging container
CA 1331749 C · Owner: Ab Tetra Pak · Inventors: Traegaardh, Paul
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, The present invention is directed to a blank for a packaging container formed from a roll of web. The blank is such that the packaging container formed therefrom has improved sealing properties because of the overlapping side margins.
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.
FiledJanuary 28, 1988
GrantedAugust 30, 1994
Term endedAugust 30, 2011
Patent numberCA 1331749 C
Classification (IPC)B65D5/42 +1 more
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.