Method for separating components in a mixture
CA 2033010 A1 · Owner: Becker, Martin · Inventors: Kurn, Nurith; Ullman, Edwin F.; Becker, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is disclosed for separating a material of interest from a mixture containing the material of interest and other insoluble or soluble components. The method comprises binding the material of interest to a bead (MI-bead) in a liquid medium. The MI-bead has a density greater than the aqueous medium. The density of the aqueous medium, or of a second liquid medium in contact with the aqueous medium, is greater than that of the insoluble components in the medium. Next the medium, is subjected to a centrifugal force sufficient to separate the MI-bead from the other components. In one embodiment, the aqueous medium is layered with a medium of at least equal density as, and higher viscosity …
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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 December 21, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 21, 2012.
- 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.