Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4435211 | Process of blowing high-oxygen gases into a molten bath which contains non-ferrous metals | Peter Fischer | 1984-03-06 |
| 4397688 | Continuous process of smelting metallic lead directly from lead- and sulfur-containing materials | Peter Fischer | 1983-08-09 |
| 4376649 | Continuous process of smelting metallic lead directly from lead-and sulfur-containing materials | Peter Fischer | 1983-03-15 |
| 4266971 | Continuous process of converting non-ferrous metal sulfide concentrates | Peter Fischer, Heinrich Traulsen | 1981-05-12 |