Medical inhalation devices
CA 1187754 A · Owner: Glaxo Group Limited · Inventors: Hallworth, Gerald W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An inhalation device for administering medicaments in an aerosol container to a patient. The device has a housing in which an aerosol container can be located. The aerosol container normally protrudes through an open end of the housing. An outlet mouthpiece leads from the interior of the housing. A passage is provided between the housing and the outlet through which air can flow when a patient inhales through the outlet A valve is located in the passage. The valve is biassed so as normally to be in the open condition but will close automatically when the rate of flow of air inhaled by the patient exceeds a pre-determined amount. The valve is conveniently n hinged flap which is springloaded …
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
- Granted May 28, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 28, 2002.
- 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.