| 438 / | HD | SEMICONDUCTOR DEVICE MANUFACTURING: PROCESS |
| 309 | DF | FORMING BIPOLAR TRANSISTOR BY FORMATION OR ALTERATION OF SEMICONDUCTIVE ACTIVE REGIONS {25} |
| 322 | DF | .~ Complementary bipolar transistors {3} |
| 323 | DF | .~.~ Having common active region (i.e., integrated injection logic (I2L), etc.) {2} |
| 324 | ![]() | .~.~.~ Including additional electrical device |