US PATENT SUBCLASS 438 / 314
.~.~ And additional electrical device

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


438 /   HD   SEMICONDUCTOR DEVICE MANUFACTURING: PROCESS

309  DF  FORMING BIPOLAR TRANSISTOR BY FORMATION OR ALTERATION OF SEMICONDUCTIVE ACTIVE REGIONS {25}
312  DF  .~ Having heterojunction {7}
314.~.~ And additional electrical device

DEFINITION

Classification: 438/314

And additional electrical device:

(under subclass 312) Process for making a heterojunction bipolar transistor and an additional electrical device.