Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5458833 | Method of thermal treatment of mineral raw material | Thomas Hammer, Heinzjosef Poggenpohl, Rainer Prange, Herbert Richrath | 1995-10-17 |
| 5246648 | Production of sintered dolomite in a rotary kiln | Thomas Hammer, Heinzjosef Poggenpohl, Herbert Richrath | 1993-09-21 |
| 5229097 | Process for the production of chlorosilicates | Rudiger Oberste-Padtberg, Dietrich Gruschka, Dieter Opitz | 1993-07-20 |
| 4636379 | Process for producing calcium hydroxide | Heinz Bestek, Werner Ewald, Hans-Peter Hennecke, Friedrich Schmitz | 1987-01-13 |
| 4627948 | Method of manufacturing a sintered dolomite in a shaft kiln | Karl H. Zepter, Dieter Opitz, Max Chmiel | 1986-12-09 |
| 4394454 | Method for making sintered dolomite with a low porosity and a good hydration stability | Karlheinz Rosener, Wolfgang Munchberg, Herbert Richrath, Max Chmiel | 1983-07-19 |