US PATENT SUBCLASS 438 / 347
.~ Permeable or metal base

Current as of: June, 1999
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438 /   HD   SEMICONDUCTOR DEVICE MANUFACTURING: PROCESS

309  DF  FORMING BIPOLAR TRANSISTOR BY FORMATION OR ALTERATION OF SEMICONDUCTIVE ACTIVE REGIONS {25}
347.~ Permeable or metal base

DEFINITION

Classification: 438/347

Permeable or metal base:

(under subclass 309) Process for making a bipolar transistor wherein the base region incompletely separates the collector and emitter regions, or is constructed of a metallic material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

192, for a method of making a vertical junction gate field effect transistor.