Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880446 | Process for heating up moist gases containing hydrogen halides | Wolfgang Dietz, Gunter Lailach, Peter Clasen | 1989-11-14 |
| 4834954 | Process for cleaning flue gases | Karl-Heinz Dorr, Hugo Grimm, Heinz Neumann, Gunter Lailach | 1989-05-30 |
| 4824655 | Process for the preparation of sulphur dioxide | Gunter Lailach | 1989-04-25 |