US PATENT SUBCLASS 327 / 411
.~.~ Bipolar transistor

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

365  DF  GATING (I.E., SWITCHING INPUT TO OUTPUT) {12}
407  DF  .~ Converging with plural inputs and single output {3}
411.~.~ Bipolar transistor {1}
412  DF  .~.~.~> Push-pull circuit {1}

DEFINITION

Classification: 327/411

Bipolar transistor:

(under subclass 407) Subject matter wherein at least one path includes a three or more electrode semiconductor device of the type having at least two potential barriers and having a controlled current flow of both majority and minority carriers (i.e., holes and electrons).

(1) Note. Npn and pnp type transistors are conventional bipolar transistors, each has three regions, three electrodes, and two junctions. Each of the three regions is connected externally by a terminal labeled emitter, base, or collector.