Method and apparatus for diffusive transfer between immiscible liquids
CA 2251885 C · Owner: Harper, Michael Jonathan · Inventors: Harper, Michael Jonathan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for carrying out a process between first and second immiscible fluids comprises channel means defining first and second primary flow paths (2, 4) for permitting fluid flow of the respective first and second fluids therethrough. Portions of said flow paths are disposed close to or adjacent one another and communicate with one another at a region (3) where the flow paths (2, 4) are constructed and arranged so as to permit the fluids to form a stable interface between them. At least one of the fluids is induced to flow in a secondary direction perpendicular to the direction of its primary flow path at said region either by bending the primary flow path (2, 4) around a curve or by …
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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 April 15, 1997 and granted February 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2019.
- 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.