Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5458833 | Method of thermal treatment of mineral raw material | Thomas Hammer, Rainer Prange, Herbert Richrath, Alfred Roeder | 1995-10-17 |
| 5246648 | Production of sintered dolomite in a rotary kiln | Thomas Hammer, Herbert Richrath, Alfred Roeder | 1993-09-21 |