Rom Only (epo) Patents (Class 257/E21.667)
- Source or drain contact programmed (EPO) (Class 257/E21.669)
- Gate contact programmed (EPO) (Class 257/E21.67)
- Doping programmed, e.g., mask ROM (EPO) (Class 257/E21.671)
- Gate programmed, e.g., different gate material or no gate (EPO) (Class 257/E21.674)
- Gate dielectric programmed, e.g., different thickness (EPO) (Class 257/E21.675)