Method and apparatus for storing and dispensing a liquid composed of oxygen containing mixture
CA 2275847 C · Owner: Grace, Mark Thomas · Inventors: Grace, Mark Thomas; Lee, Ron C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for storing and dispensing a liquid consisting of an oxygen containing mixture so that the liquid will not contain any more than a predetermined concentration of the oxygen at a predetermined pressure. In accordance, with the invention, the mixture is introduced into the container at a specified initial, concentration. A hypothetical volume of the saturated state of the liquid having the, initial concentration is computed that when expanded into the total volume of the, container, the resulting liquid would have the maximum enrichment. The liquid is, dispensed from a bottom region of the container and dispensing is prevented when the, liquid remaining within the …
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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 June 21, 1999 and granted February 4, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2021.
- 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.