Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5612383 | Weakly basic anion exchangers, processes for their preparation by aminolysis and their use for removing sulphate ions from aqueous liquids | Harold Heller, Franz-Rudolf Minz, Alfred Mitschker, Heiko Hoffmann | 1997-03-18 |