Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6814947 | Method for producing calcium compounds containing water of crystallization | Josef Lehmkuhl, Ansgar Fendel | 2004-11-09 |
| 5324501 | Method for the preparation of low-chloride plaster products from calcium-containing residues of flue-gas purification plants | Diethel M. Koehnk | 1994-06-28 |
| 4472359 | Method of pressure leaching | Hartmut Pietsch, Wolfgang Turke, Karl-Josef Memmel | 1984-09-18 |
| 4438076 | Method of extracting gold and silver from an ore | Hartmut Pietsch, Wolfgang Turke, Ernst Bareuther, Fritz Kampf | 1984-03-20 |
| 4362701 | Rotating apparatus for manufacturing hydrogen fluoride | Jorg Kruger, Roland Thome, Dieter Moritz, Herbert Losert | 1982-12-07 |
| 4361541 | Method for extraction of uranium from ores | Fritz Kampf, Roland Thome, Gerhard Wargalla, Gunter Winkhaus, Hartmut Pietsch +2 more | 1982-11-30 |
| 4304755 | Apparatus for manufacturing vanadium pentoxide | Roland Thome, Hans Obermaier | 1981-12-08 |
| 4294816 | Process for producing hydrogen fluoride from fluorine containing materials by continuous pyrohydrolysis | Jorg Kruger, Roland Thome, Dieter Moritz, Herbert Losert | 1981-10-13 |