Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4613344 | Method and apparatus for cleaning hot gases produced during a coal gasification process | Harald Hoffmann, Heinz-Dieter Waldhecker, Klaus-Peter Mey | 1986-09-23 |
| 4566882 | Filter for cleaning gases | Harald Hoffmann, Heinz-Dieter Waldhecker | 1986-01-28 |