Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5797496 | Method for the utilization of ash from coal-fired plants | Jurgen Lehrke | 1998-08-25 |
| 5782363 | Method of conducting fluidized-bed firing with open-pass ash obtained from a coal-firing plant or the like | — | 1998-07-21 |