Pressurised aerosol dispenser
CA 2457049 A1 · Owner: Aventis Pharma Limited · Inventors: Mizban, Samir; Shadwell, David W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pressurised aerosol dispenser comprising a container (2) for material to be stored therein and dispensed therefrom and a metering dispensing valve (1), said metering dispensing valve (1) comprising a generally cup-shaped metering vessel (7) held in place by means of a cap (3) fixedly mounted upon said container (2), and a sealing member (9) disposed between the metering vessel (7) and the cap (3), said sealing member (9) having an opening within which a valve stem (8) is mounted for sliding movement along a longitudinal axis the , metering vessel (7) having an open mouth an internal surface of which defines , an annular contact surface (24 25) against which said sealing member (9) …
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 August 12, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 2024.
- 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.