Apparatus and method for sparging a gas into a liquid
CA 2056418 A1 · Owner: Cheng, Alan T. Y. · Inventors: Cheng, Alan T. Y.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure An improved apparatus and method for, sparging a gas into a body of liquid wherein the gas is discharged at sonic velocity into the liquid producing a shock wave and creating a jet of dispersed gas and liquid. The jet induces cocurrent flow in contiguous liquid preventing coalescence and enhancing mass transfer between the phases. In apparatus for the practice of the method the gas, discharge nozzle is directed into an acceleration tube through which the jet and induced liquid flow pass and are discharged into a larger draft tube thereby increasing the induced liquid flow. D-16146
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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 March 3, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 3, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 2013.
- 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.