Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5474592 | Method of reprocessing metallurgical residues, which contain zinc and lead | Wolfgang Bresser, Martin Hirsch, Uwe Harter | 1995-12-12 |
| 5244551 | Process of regenerating waste pickle which contains metal salts and acids | Volker Brucken, Manfred Potzschke, Ernst Wallis | 1993-09-14 |
| 5162107 | Method of reprocessing zinc- and lead-containing residues from metallurgical plants by means of a circulating fluidized bed system | Martin Hirsch, Alpaydin Saatci, Karlheinz Broj, Uwe Harter, Walter Meichsner | 1992-11-10 |