Improved airway device
CA 2535849 C · Owner: Nasir, Muhammed Aslam · Inventors: Nasir, Muhammed Aslam
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An airway device (10) for human or animal use comprising an airway tube (11) having a distal end (13) and a proximal end (12) the distal end (13) of which , is surrounded by a laryngeal cuff (14) wherein the cuff (14) is non-, inflatable and is pre-formed in a shape such that a face region of the cuff (14) is adapted to fit snugly over the laryngeal inlet of a patient and , wherein the external profile of the tube is substantially uniform between the distal end (13) of the tube (11) where it starts to meet the cuff (14) and the proximal end (13) of the tube (11), and wherein the face region of the cuff (14) is formed from a material with a Shore hardness on the A scale of between 0 to …
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 August 13, 2004 and granted March 26, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 13, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 13, 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.