Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660810 | Method and device for delivering hot, aggressive media | Hans-Ulrich Dummersdorf, Helmut Waldmann, Helmut Harle, Fritz Gestermann | 1997-08-26 |
| 5612383 | Weakly basic anion exchangers, processes for their preparation by aminolysis and their use for removing sulphate ions from aqueous liquids | Harold Heller, Reinhold Klipper, Alfred Mitschker, Heiko Hoffmann | 1997-03-18 |