Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6637270 | System for transmitting ultrasonic waves | Dietmar Oberhoff, Gunther Coen, Ernst Luhn | 2003-10-28 |
| 5841534 | Apparatus for determining the density, size or size distribution of particles | — | 1998-11-24 |
| 5828146 | Apparatus for the bidirectional transfer of information | Ernst Luhn, Lothar J Zell | 1998-10-27 |
| 4948259 | Method and apparatus for monitoring layer erosion in a dry-etching process | Knut Enke, Ingo Hussla | 1990-08-14 |
| 4304669 | Device for the mass transfer between fluids | Erich Knothe | 1981-12-08 |
| 4219422 | Apparatus for mass transfer between fluids, provided with an interposed selectively permeable diaphragm unit | Erich Knothe | 1980-08-26 |