Auxiliary device for use with aerosol container
CA 2014640 C · Owner: Glaxo Group Limited · Inventors: Kraemer, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An auxiliary device is provided for use with a metered-dose aerosol device. The auxiliary device comprises a chamber (2) having an inlet (3) adapted to receive the metered-dose aerosol device and an outlet. A mask (30) adapted to communicate with the nose and/or mouth of an infant or young child communicates with the chamber outlet via a first valve (10) which permits the infant or young child to inhale aerosol-carrying air from the chamber, and communicates with atmosphere via a second valve (15) permitting exhalation therethrough. The distance between the chamber inlet and the chamber outlet is such that the mass percentage of aerosol particles having a diameter of from 1.0 microns to 5.0 …
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 April 17, 1990 and granted August 28, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2012.
- 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.