Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4904390 | Method for varying the capacity of an ion exchanger for a specific chemical element | Werner Schweighofer, Christian M. Z. Schwabedissen, Brigitte Siewert-Posielek, Klaus Seifert | 1990-02-27 |