Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4909837 | Process and apparatus for granulating molten slag | Uwe Hansen | 1990-03-20 |
| 4614541 | Method of continuous metallurgical processing of copper-lead matte | Gerhard Berndt | 1986-09-30 |