US PATENT SUBCLASS 257 / 369
.~.~.~ Complementary insulated gate field effect transistors


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}
368  DF  .~.~ Insulated gate field effect transistor in integrated circuit {10}
369.~.~.~ Complementary insulated gate field effect transistors {5}
370  DF  .~.~.~.~> Combined with bipolar transistor
371  DF  .~.~.~.~> Complementary transistors in wells of opposite conductivity types more heavily doped than the substrate region in which they are formed, e.g., twin wells
372  DF  .~.~.~.~> With means to prevent latchup or parasitic conduction channels
373  DF  .~.~.~.~> With pn junction to collect injected minority carriers to prevent parasitic bipolar transistor action {3}
377  DF  .~.~.~.~> With polysilicon interconnections to source or drain regions (e.g., polysilicon laminated with silicide)


DEFINITION

Classification: 257/369

Complementary insulated gate field effect transistors:

(under subclass 368) Subject matter wherein the device is made up of IGFETs that have opposite conductivity channels (p-type and n-type).