Nasal interface apparatus
CA 2530150 C · Owner: Chu, Edmond · Inventors: Chu, Edmond; Thomlinson, Marguerite; Ventress, Jim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A nasal interface device (2) for use in the nares of a patient for positive airway pressure applications includes a pair of nasal prongs (18) each prong , having a bore (11), a first end a second end, and at least one deformable flap (20) disposed proximate to the first end of each prong. The device further includes a body having a distal portion (16) and a proximal portion (14) forming a chamber, the proximal portion (14) having apertures to receive the second ends of the nasal prongs, the chamber being in communication with the bores of the nasal prongs, and at least one exhalation port (22) disposed within the body. The device includes at least one gas inlet (24) on the distal …
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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 14, 2004 and granted May 7, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 14, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 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
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.