Positive airway pressure system and method for treatment of sleeping disorder in patient
CA 2695839 C · Owner: Norman, Robert G. · Inventors: Rapoport, David M.; Norman, Robert G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A positive airway pressure system for treatment of a sleeping disorder in a patient comprises a generator supplying airflow and applying a pressure to an airway of a patient. A sensor measures data corresponding to patient's breathing patterns and a processing arrangement analyzing the breathing patterns to determine whether the breathing patterns are indicative of one of the following patient's states: (i) a regular breathing state (ii) a sleep disorder breathing state, (iii) a REM sleep state and (iv) a troubled wakefulness state. The processing arrangement adjusts the applied pressure as a function of the patient's state; when the breathing patterns indicate state (iv) the processing …
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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 July 21, 2004 and granted August 16, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 21, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 2026.
- 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
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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.