Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864065 | Process for removing halogenated hydroxyaromatics from aqueous solutions | Siegbert Rittner, Heinz Reiss, Reinhard Zunder | 1989-09-05 |
| 4814518 | Process for extracting nitrohydroxyaromatics from aqueous solutions | Helmut Gossel, Herbert Kuckertz, Siegbert Rittner, Josef Rosenfelder | 1989-03-21 |