Laryngeal mask airway device
CA 2519688 C · Owner: Brain, Archibald Ian Jeremy · Inventors: Brain, Archibald Ian Jeremy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The disclosed laryngeal mask airway device (500) includes an inflatable cuff (130) and an airway tube (510). The inflatable cuff defines a central opening (136) at least when inflated. The cuff is insertable through a mouth of a patient to an inserted location within the patient. The cuff surrounds a glottic opening of the patient when the cuff is inflated and at the inserted location. The airway tube extends from a proximal end (512) to a distal end (514). The airway tube defines an internat passage an anterior portion , (510f), a posterior portion (51 Op) a left portion (510-left), and a right portion (510-right). An airway passage extends from the proximal end of the tube through …
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 January 8, 2004 and granted March 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 8, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 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.