Metered dose inhaler system
CA 2096731 C · Owner: Sierra Biotechnology Company, L.C. · Inventors: Hillsman, Deane
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A visual and auditory biofeedback system to instruct patients in proper techniques of inhalation to correctly administer aerosol drugs with Metered Dose Inhaler (MDI) (1 and 2) devices. The system displays desired respiratory parameters of correct expiration lung volume (8 and 9) along with real time inspiration performance (10) with computer (6) related technology means. Optimal performance parameters suited to individual patient needs may be generated. Suitable respiratory flow transducer means (5) is used to generate integrated air volume signals in real time and , suitable electronic switching means (7) is used to indicate MDI activation in real time. The system thus provides visual …
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 4, 1991 and granted March 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 4, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 4, 2013.
- 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.