Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4666695 | Settling of sulfur in sulfide removal process | Karl Baur, Ludwig Fruhstorfer, Hans-Jurgen Neubert | 1987-05-19 |
| 4474740 | Method for regenerating physically acting organic scrubbing agents | Heinz Karwat | 1984-10-02 |