Strip of material
CA 2090787 C · Owner: Tetra Alfa Holdings S.A. · Inventors: Sjoestroem, Anders
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a strip of material for manufacture of packaging containers with an opening device containing a pull tab, wherein the pull tab extends mainly transversely over a part of one side surface of the strip of material around one longitudinal. edge of the strip of material and mainly transversely over a part of a second side surface of the strip of material, with the longitudinal edge exhibiting cut-outs for the pull tab.
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 March 2, 1993 and granted October 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 2, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 2, 2015.
- 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.