Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4464245 | Method of increasing the oil yield from hydrogenation of coal | — | 1984-08-07 |
| 4261832 | Membranes with preselected pore types for separation processes | Horst Schumacher, Harald Juntgen, Ernst Preuss, Dieter Zundorf, Ingo Romey | 1981-04-14 |