Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839007 | Method for purifying industrial waste water by direct oxidation of the organic pollutants | Rudiger Kotz, Claus Schuler | 1989-06-13 |
| 4836929 | Process for breaking down organic substances and/or microbes in pretreated feed water for high-purity water recirculation systems | Hans D. Baumann | 1989-06-06 |