Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2006-10-31
2006-10-31
Mack, Ricky (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C430S034000, C345S107000
Reexamination Certificate
active
07130106
ABSTRACT:
Magnetic display devices include low-density silica coated magnetic and nonmagnetic particles. In a one-particle system, low-density silica coated magnetic particles coated by a sol-gel process are used in combination with non-magnetic particles. In a two-particle system, low-density silica coated magnetic particles coated by a sol-gel process are used in combination with low-density silica coated non-magnetic particles. Display devices employing silica coated magnetic particles minimize the tendency of the magnetic particles to aggregate. Silica coated magnetic particles in a display device results in a magnetic display with improved image stability. Low-density silica coated magnetic particles in a display device allow for particles to move easily through a dispersion fluid in response to a magnetic field.
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Cannas Carla
Iftime Gabriel
Kazmaier Peter M.
Choi William
Mack Ricky
Pepper Hamilton LLP
Xerox Corporation
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