Container sealing assembly
CA 2236321 C · Owner: Soplaril S.A. · Inventors: Engelaere, Jean-Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sealing assembly (S) for a container (C) with an opening (O) including a sheet (F) welded to the edge of the opening and consisting of at least three layers i.e. a weld layer (1) applied and welded to the edge of the opening along a bead (4) an outer barrier layer (2) and an intermediate adhesive layer (3). The weld between the bead (4) of the weld layer (1) and the edge of the opening has a tear resistance higher than the adhesive force between the weld layer (1) and the adhesive layer (3) whereby after the opening (O) has been unsealed for the first time the weld bead (4) remains in place along the edge thereof and is separated from the weld layer (1) and the adhesive layer (3) which is …
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 November 28, 1996 and granted February 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 28, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 2018.
- 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.