Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Reexamination Certificate
2006-03-21
2006-03-21
Barrera, Ramon M. (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
C335S285000, C335S306000
Reexamination Certificate
active
07015780
ABSTRACT:
A monolithic or dual monolithic magnetic device or apparatus having an array of formations such as protruding or raised nubs wherein adjacent nubs have the same or opposite polarity to produce a high magnetic field gradient in the vicinity of the nubs is described. In lieu of nubs, the use of a magnetic device with thru-holes, blind holes, filled holes, or iron flux concentrators is also detailed, wherein all embodiments result in regions of high magnetic field gradient. Apparatus and methods for spot-poling a magnet array are also illustrated.An application of an array of MEMS actuators using the magnets of the present invention to produce high field gradient at precise locations is described. A further application of a biochemical separation unit containing a magnetic array and micro-fluidic channels for separating out magnetic particles tagged with bio-specific molecules for sensing the presence of a disease or specified chemicals is also described.
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Bernstein Jonathan Jay
Brazzle John David
Corcoran Christopher John
Lee James Kelly
Taylor William Patrick
Barrera Ramon M.
Corning Incorporated
Pappas Joanne N.
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