| US 7,615,382 B2 | ||
| Magnetic sifter | ||
| Shan X. Wang, Portola Valley, Calif. (US); Nader Pourmand, San Mateo, Calif. (US); and Robert L. White, Stanford, Calif. (US) | ||
| Assigned to The Board of Trustees of the Leland Stanford Junior University, Palo Alto, Calif. (US) | ||
| Filed on Nov. 09, 2006, as Appl. No. 11/595,818. | ||
| Claims priority of provisional application 60/735558, filed on Nov. 09, 2005. | ||
| Prior Publication US 2007/0181466 A1, Aug. 09, 2007 | ||
| Int. Cl. G01N 33/553 (2006.01); B03C 1/30 (2006.01) | ||
| U.S. Cl. 436—526 [436/518; 436/538; 209/38; 209/214; 209/215] | 27 Claims |
| 1. A magnetic sifter, comprising:
a) at least one substrate, wherein each of said at least one substrates contains a plurality of slits, and wherein each slit
extends through said at least one substrate;
b) a plurality of magnets attached to a bottom surface of said substrate, wherein said plurality of magnets are proximal to
openings of said plurality of slits; and
c) an electromagnetic source, wherein said source controls the magnitude and direction of a magnetic field gradient generated
by said plurality of magnets.
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