US PATENT SUBCLASS 438 / 378
.~ Radiation or energy treatment modifying properties of semiconductor regions of substrate (e.g., thermal, corpuscular, electromagnetic, etc.)

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}
378.~ Radiation or energy treatment modifying properties of semiconductor regions of substrate (e.g., thermal, corpuscular, electromagnetic, etc.)

DEFINITION

Classification: 438/378

Radiation or energy treatment modifying properties of semiconductor regions of substrate (e.g., thermal, corpuscular, electromagnetic, etc.):

(under subclass 309) Process for making a bipolar transistor having a step of irradiating the semiconductor substrate to alter the electrical properties of semiconductive regions thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

795, for a process of modifying properties of semiconductive regions of the substrate via radiation or energy treatment.