| 257 / | HD | ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) |
| 499 | DF | INTEGRATED CIRCUIT STRUCTURE WITH ELECTRICALLY ISOLATED COMPONENTS {9} |
| 506 | DF | .~ Including dielectric isolation means {7} |
| 523 | ![]() | .~.~ Isolation by region of intrinsic (undoped) semiconductor material (e.g., including region physically damaged by proton bombardment) |