US PATENT SUBCLASS 438 / FOR 314
.~.~.~ Forming regions of different concentrations or different depths (437/154)

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

FOR 149  DF  INCLUDING FORMING A SEMICONDUCTOR JUNCTION (437/15) {7}
FOR 301  DF  .~ Diffusing a dopant (437/141) {17}
FOR 313  DF  .~.~ Single dopant forming plural diverse regions (437/153) {1}
FOR 314.~.~.~ Forming regions of different concentrations or different depths (437/154)

DEFINITION

Classification: 438/FOR.314

Forming regions of different concentrations or different depths:

Foreign art collection for a process wherein the regions formed differ in amount of impurity or the distance the impurity has to travel inwardly from the surface.