Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679240 | Anode for the electrolytic winning of metals and process | Gerhard Jedlicka, Karl Lohrberg | 1997-10-21 |
| 5637206 | Process for the electrochemical production of ammonium polysulfide | Eilhard Hillrichs, Karl Lohrberg, Gert Ungar | 1997-06-10 |