Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5866499 | Process for producing a catalyst | Erich Hums, Friedrich Weyland | 1999-02-02 |
| 5200383 | Method for the production of catalytically active mixed phases | Friedrich Weyland | 1993-04-06 |
| 5144091 | Preparation of acrolein or methacrolein by actalytic gas-phase oxidation of propene or isobutene | Hans Martan, Ulrike Wegerle, Wilhelm Ruppel, Lothar Riekert, Dieter Becker | 1992-09-01 |
| 4994430 | Method of preparing a plate-like support bearing catalytically active compounds | Friedrich Weyland | 1991-02-19 |
| 4985126 | Apparatus and process for continuously monitoring concentrations of gaseous components in gas mixtures, with exception of O.sub.2 | Edelbert Haefele | 1991-01-15 |
| 4867953 | Method for the selective elimination of nitrogen oxides from exhaust gases | Lothar Riekert, Friedrich Weyland | 1989-09-19 |
| 4719094 | Process for the selective catalytic removal of nitrogen oxides from the waste gases of furnaces | Lothar Rieckert | 1988-01-12 |
| 4594332 | Preparation of hard, fracture-resistant catalysts from zeolite powder | Wolfgang Hoelderich, Lothar Riekert, Ulrich Hammon | 1986-06-10 |