Method and device for rapid chromatographic separation
CA 1069445 A · Owner: Societe Nationale Elf Aquitaine · Inventors: Valentin, Patrick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A method of rapid chromatographic separation by exchange of substances between two fluid phases circulating in countercurrent flow, at least one phase being liquid consists in injecting the substances to be separated into one of the phases, in causing the two phases to circulate on each side of a porous body having a thickness within the range of 1 to 200 microns while limiting the thickness of at least one liquid phase to a constant value within the range of 0.1 to 100 microns and in collecting after circulation the substances which have been separated in each of the two phases. -1-
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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
- Granted January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- 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.