Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6690229 | Feed back current-source circuit | — | 2004-02-10 |
| 5266408 | Magnetic recording media | Uwe Keppeler, Hermann Dikow, Helmut Auweter, Michael Bobrich, Gregor Brodt +3 more | 1993-11-30 |
| 4992083 | Apparatus for intermediate enrichment of trace substances from a gas stream in a cold trap, and chromatography arrangement provided therewith | Klaus Mueller | 1991-02-12 |
| 4887434 | Apparatus for the cryogenic enrichment of trace substances of a gas stream | Gunter Pilwat | 1989-12-19 |