Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8906122 | Coal processing operation comprising a dense media separation stage to separate a coal feedstock into lower and higher ash coal streams | Frans Boudewijn Waanders | 2014-12-09 |
| 8252074 | Method of operating a fixed bed dry bottom gasifier | Margaretha Coertzen | 2012-08-28 |
| 5778795 | Railway truck assembly for truck maintainence | Peter G. Kusel | 1998-07-14 |