Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5030415 | Structural part made of ferritic chromium-molybdenum steel which is resistant to concentrated sulfuric acid | Hermann Muller, Ulrich Sander, Wolfram Schalk, Ernst Wallis | 1991-07-09 |
| 5030428 | Process of purifying flue gases | Hugo Grimm, Heinz Enumann, Jurgen Adlkofer | 1991-07-09 |
| 4910011 | Process of purifying flue gases | Hugo Grimm, Heinz Neumann, Norbert Olhms | 1990-03-20 |
| 4842835 | Process of purifying flue gases | Hugo Grimm, Heinz Neumann, Wolfgang Fennemann, Norbert Ohlms | 1989-06-27 |
| 4834954 | Process for cleaning flue gases | Hugo Grimm, Heinz Neumann, Rudolf Gerken, Gunter Lailach | 1989-05-30 |
| 4582481 | Process of drying sulfide ores in direct contact with hot drying gases | Ulrich Sander, Alfons Schulte, Heinrich Traulsen | 1986-04-15 |
| 4533537 | Process of producing sulfuric acid | Heinz Dittmar, Manfred Beckmann, Ulrich Rothe, Ulrich Sander | 1985-08-06 |
| 4368183 | Process of producing concentrated sulfuric acid | Hugo Grimm, Ulrich Sander, Robert Peichl, Franz Maier | 1983-01-11 |
| 4333917 | Process of producing sulfuric acid | Helmut Diekmann, Hugo Grimm, Ulrich Sander, Michael Tacke, Waldemar Weber | 1982-06-08 |
| 4330364 | Process of strengthening dilute phosphoric acid | Walter Blumrich, Hans-Joachim Konig, Ulrich Sander | 1982-05-18 |
| 4276116 | Process of strengthening dilute phosphoric acid | Walter Blumrich, Hans-Joachim Konig, Ulrich Sander | 1981-06-30 |