Electricity: electrical systems and devices – Electrostatic capacitors – Variable
Reexamination Certificate
2004-06-01
2008-08-12
Ha, Nguyen T (Department: 2831)
Electricity: electrical systems and devices
Electrostatic capacitors
Variable
C361S272000, C361S278000, C361S286000, C361S290000, C361S292000
Reexamination Certificate
active
07411774
ABSTRACT:
A charge storage device having a capacitance that is variable by alteration of the relative permittivity of the dielectric positioned between conductive electrodes within the device. The device consists of two conductive plates sandwiching a conductive grid, typically embedded within a dielectric material. Charging the grid with a negative or positive potential changes the value of the dielectric constant (the relative permittivity) and thereby changes the capacitance of the device.
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Ha Nguyen T
Krammer Browning PLLC
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