Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5324500 | Method for processing residues of barium sulfide or strontium sulfide leaching | Paul Jaeger, Heinz-Hermann Riechers, Karl Koehler | 1994-06-28 |
| 5312604 | Work-up of waste materials from barium or strontium sulfide leaching | Paul Jaeger, Hans-Hermann Riechers, Karl Koehler | 1994-05-17 |