Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701022 | Semiconductor memory device with trench capacitor | Walter Kellner, Karl-Heinz Kusters, Franz-Xaver Stelz | 1997-12-23 |
| 5698174 | Process for separating fullerenes | Richard Broll, Eckhard Weber, Johann Daimer, Roland Müller | 1997-12-16 |
| 5661970 | Thrust-generating device | German Munding | 1997-09-02 |
| 5636712 | Apparatus for driving a self-propelled elevator | Christoph Liebetrau, Utz Richter, Jurgen Kastle, Albrecht Morlok, Helmut Heizmann | 1997-06-10 |
| 5624549 | Apparatus for partial dewatering of raw sludge comprising reciprocating plunger presses | Dirk Herzog | 1997-04-29 |