Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6387280 | Process for reducing the amount of nitrification-inhibiting sulfur compounds | Curt Zimmermann, Helmut Sengstschmid | 2002-05-14 |
| 4990551 | Absorbing polymer | Georg Häubl | 1991-02-05 |