Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877761 | Refractory composition for refractory linings of metallurgical vessels | Rainer Prange | 1989-10-31 |
| 4627948 | Method of manufacturing a sintered dolomite in a shaft kiln | Karl H. Zepter, Dieter Opitz, Alfred Roeder | 1986-12-09 |
| 4394454 | Method for making sintered dolomite with a low porosity and a good hydration stability | Karlheinz Rosener, Alfred Roeder, Wolfgang Munchberg, Herbert Richrath | 1983-07-19 |