Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5843819 | Semiconductor memory device with trench capacitor and method for the production thereof | Walter Kellner, Karl-Heinz Kusters, Wolfgang Muller | 1998-12-01 |
| 5701022 | Semiconductor memory device with trench capacitor | Walter Kellner, Karl-Heinz Kusters, Wolfgang Muller | 1997-12-23 |