The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2003
Filed:
Aug. 20, 2001
Arijit Bose, Lexington, MA (US);
Abstract
A continuous, hybrid magnetic field gradient device for colloidal magnetic affinity separation having an axially-rotating horizontal glass tube, and a plurality of axially located repeating magnetic units. Each magnetic units consists of an alternating current solenoid that surrounds the chamber followed by computer-controlled electromagnets carrying a direct current. The on-off cycle of the electromagnets is used to control the residence time of target-bound magnetic particles in the chamber thereby allowing the separate collection of the particle and target rich fractions and the target-lean fractions without interrupting the feed flow. The azimuthally flowing alternating current in the solenoid introduces transient axial and radial forces as well as torque on the magnetic particles, promoting mixing.