Oxygen and nitrogen enriched atmospheres in aircraft
CA 2437422 A1 · Owner: Lyons, Arthur · Inventors: Van Den Gross, Andrew; Lyons, Arthur
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the present method of supplying oxygen rich air to the passengers and crew on, board a passenger aircraft by means of a highly permeable oxygen enrichment unit, the fibre, tubes of the hollow fibre membranes used to separate normal air into oxygen rich and nitrogen, rich fractions in the oxygen enrichment unit are subjected to a modification technique before, the tubes are coated with a selective polymer. Also in the present method of , supplying inert nitrogen rich air to the fuel tanks or other areas of an aircraft by means of a highly selective, nitrogen enrichment unit wherein the fibre tubes of the hollow fibre membranes used to, separate normal air into nitrogen rich and …
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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 August 15, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 15, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 15, 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.