Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4444698 | Special heat exchange for coal liquefaction system | Udo Lang, Ullrich Hildebrandt, Walter Schramm | 1984-04-24 |
| 4343633 | High pressure purification of hydrogen | Helmut Kick, Hans Kistenmacher, Walter Schramm, Udo Lang | 1982-08-10 |