Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818252 | Arrangement for gasifying finely divided particularly solid fuel under high pressure | Hans Niermann, Hans C. Pohl | 1989-04-04 |
| 4818253 | Device for gasifying finely divided fuels under increased pressure | Hans Niermann, Norbert Ullrich | 1989-04-04 |
| 4807698 | Heat exchanger for gases under high pressure | Hans Niermann | 1989-02-28 |