Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836988 | Apparatus for removal of nitrogen oxides from flue gas | Wolfgang Kristof, Claus Schlebener | 1989-06-06 |
| 4795620 | Claus residual gas cleanup using tetraethylene glycol dimethyl ethers as SO.sub.2 scrubbing agent | Michael Heisel | 1989-01-03 |