Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5674315 | Process for preparing a meta-kaolin white pigment from kaolinite | Jochen Kauper, Werner Stockhausen, Martin Rahn | 1997-10-07 |
| 4438076 | Method of extracting gold and silver from an ore | Hartmut Pietsch, Wolfgang Turke, Fritz Kampf, Hubert Bings | 1984-03-20 |