Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5688725 | Method of making a trench mosfet with heavily doped delta layer to provide low on-resistance | Richard K. Williams | 1997-11-18 |
| 5689128 | High density trenched DMOS transistor | Fwu-Iuan Hshieh, Mike F. Chang, Kuo-In Chen, Richard K. Williams | 1997-11-18 |
| 5674766 | Method of making a trench MOSFET with multi-resistivity drain to provide low on-resistance by varying dopant concentration in epitaxial layer | Richard K. Williams | 1997-10-07 |