A bottom for a package with internal overpressure
CA 2234634 A1 · Owner: Tetra Laval Holdings & Finance, S.A. · Inventors: Olsson, Hakan; Hilmersson, Anders
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A three part package of polymer coated aluminium for fill-goods under pressure includes a for example frusto-conical barrel (1) a top (2) and a bottom (3). , The bottom includes a central circular dome (4) facing inwardly in the package, outside thereof a circular portion (6) which is inwardly curved and , extends towards the barrel and a rim (8), which extends downwardly from the curved portion and is intended for sealing to the barrel.
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 January 13, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 13, 2019.
- 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.