Humidifier with back-flow prevention valve
CA 2623667 C · Owner: Pujol, J. Raymond · Inventors: Martin, Daniel; Kimmel, Steven A.; Kepler, Jeffrey
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A humidifier for use with a pressure support system. The humidifier includes a body (44, 302, 442, 910) having an inlet (36 308, 448, 914), a fluid holding , chamber (46 318, 454, 912), and an outlet (40, 916). The inlet is positioned upstream and in fluid communication with the fluid holding chamber. The outlet is positioned downstream of and in fluid communication with the fluid holding chamber. A back-flow preventing valve (60 160, 260, 304, 334, 400, 444, 500, 600 700, 760, 902, 930, 958, 970, 980) is positioned upstream of the fluid chamber. The back-flow preventing valve is movable between an open position in which the inlet is unblocked, and a closed position in which the inlet …
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 September 27, 2006 and granted July 8, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 27, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.