Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4744892 | Process for dressing kaolinite by flotation | Wolfgang von Rybinski, Holger Tesmann | 1988-05-17 |
| 4714544 | Process for dressing kaolinite by flotation | Wolfgang von Rybinski, Holger Tesmann | 1987-12-22 |
| 4297159 | Method to directly bond rubber to metal | Klaus Heckmann | 1981-10-27 |