Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4406696 | Process for recovering of metals from solutions of metal salts | Walter A. Hans, Hans D. Reiterer, Ernst Eichberger | 1983-09-27 |
| 4404027 | Method of recovering heavy metals | Ernst Eichberger | 1983-09-13 |