Nasal mask with central body supported brace
CA 2689568 C · Owner: Rosenkranz, Mark E. · Inventors: Sprinkle, Tom; Whitesel, Mary B.; Rosenkranz, Mark E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A nasal mask assembly for preferred use in CPAP treatment. The mask assembly comprises a central body a face cushion, a forehead support and a gas inlet. The gas inlet is rotatably connected to the central body and the forehead support is pivotally connected to the central body. A method of using such a mask is also provided.
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 March 22, 2003 and granted February 18, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 2025.
- 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.