Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667556 | Method of reprocessing zinc- and iron oxide-containing residual material | Andreas Orth, Peter Weber, Ernst Wallis | 1997-09-16 |
| 5474592 | Method of reprocessing metallurgical residues, which contain zinc and lead | Wolfgang Bresser, Martin Hirsch, Albert Kaune | 1995-12-12 |
| 5162107 | Method of reprocessing zinc- and lead-containing residues from metallurgical plants by means of a circulating fluidized bed system | Martin Hirsch, Albert Kaune, Alpaydin Saatci, Karlheinz Broj, Walter Meichsner | 1992-11-10 |