Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4280283 | Method and device for the operation of a hot gas generator within a dryer | Jakob Ansen, Helmut Duill | 1981-07-28 |
| 4270466 | Method and apparatus for rendering an ignitable fuel-oxygen mixture inert | Jakob Ansen, Helmut Duill, Rupprecht Graf | 1981-06-02 |
| 4193554 | Method and apparatus for the drying and fine-grinding of coal | Jakob Ansen, Horst Herchenbach, Helmut Wustner | 1980-03-18 |