US PATENT SUBCLASS 257 / 312
.~.~.~ Voltage variable capacitor (i.e., capacitance varies with applied voltage)

Current as of: June, 1999
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257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

213  DF  FIELD EFFECT DEVICE {6}
288  DF  .~ Having insulated electrode (e.g., MOSFET, MOS diode) {17}
296  DF  .~.~ Insulated gate capacitor or insulated gate transistor combined with capacitor (e.g., dynamic memory cell) {10}
312.~.~.~ Voltage variable capacitor (i.e., capacitance varies with applied voltage)

DEFINITION

Classification: 257/312

Voltage variable capacitor (i. e., capacitance varies with applied voltage):

(under subclass 296) Subject matter wherein the device changes its capacitance depending on the amount of voltage applied thereto.