Inhalator designed to provide multiple doses of a dry pharmacological powder
CA 2239292 C · Owner: Jago Research Ag · Inventors: Eggimann, Thomas; Keller, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The inhalator proposed has a casing (100 150) to which is fitted a special , mouthpiece (900) covered by a removable protective cap (950). Disposed inside the casing are a slide valve guide rail (200) a metering slide valve (300), a , closure (400) a slide (500), a funnel (600), a counter (700) a valve cover , (800) and a valve guide (850). When the protective cap (950) is pulled off the metering of the powder is triggered and a dose held in the dose cavity is conveyed by the metering slide valve (300) to the mouthpiece (900). Only when a given minimum inhalation intensity is produced is the closure (400) displaced by the aspirated valve cover (800) thus releasing the dose so that , it …
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 December 5, 1996 and granted September 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 5, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 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.