Liquid purification or separation – Processes – Using magnetic force
Reexamination Certificate
2011-07-05
2011-07-05
Reifsnyder, David A (Department: 1776)
Liquid purification or separation
Processes
Using magnetic force
C210S222000, C436S526000, C422S501000, C422S527000, C422S547000
Reexamination Certificate
active
07972516
ABSTRACT:
A process for manipulating magnetic particles suspended in a fluid that are able to bind to an entity of interest, the fluid being contained in a reaction vessel having a large funnel shaped upper compartment, an elongate lower compartment of substantially constant cross-section and a closed base. The process consists of:a) subjecting the magnetic particles to two simultaneously applied magnetic fields to separate all said magnetic particles present in at least the upper compartment of the vessel from the fluid,b) transferring the separated magnetic particles from the upper compartment to the lower compartment,c) removing the fluid from the vessel,d) adding a washing liquid to the lower compartment,e) subjecting the magnetic particles to at least two magnetic fields applied successively with changing directions to wash all the magnetic particles present in the lower compartment, andconcentrating said magnetic particles in said lower compartment.
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patent: 7396690 (2008-07-01), Colin
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Written Opinion for PCT/EP2005/008073, mailed Jan. 30, 2007.
International Search Report mailed Oct. 28, 2005 for corresponding PCT application No. PCT/EP2005/008073 (2 pages).
Beerling Bernardus Jozef Maria
Kreuwel Hermannus Johannes Maria
Spee Franciscus Gerardus
Verwimp Emiel Gerebern Maria
Biomerieux B.V.
Myers Bigel Sibley & Sajovec P.A.
Reifsnyder David A
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