Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5336474 | Process for leaching of precious metals | Karl-Heinz Koenig, Eckhart Krone, Juergen Loroesch, Norbert Steiner, Jochen Ullmann +1 more | 1994-08-09 |
| 5306431 | Process for automatically controllable reduction of the nitrite content of nitrite-containing aqueous solutions to values below 1 mg/1 | Joachim Fischer, Hubert Wolf, Klaus Stuetzel, Friedhelm Brandner | 1994-04-26 |