Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5649322 | Process for the preparation of C.sub.1 -C.sub.4 -alkyl nitrites | Heinz Landscheidt, Paul Wagner, Alexander Klausener | 1997-07-15 |
| 5599965 | Process for the preparation of dialky carbonates | Helmut Waldmann, Hans-Joachim Traenckner | 1997-02-04 |
| 5523452 | Process for preparing dimethyl carbonate | Heinrich Steude, Helmut Waldmann, Kaspar Hallenberger, Wolfram Wagner, Hans-Joachim Traenckner | 1996-06-04 |
| 5504260 | Catalytic oxidation | Helmut Waldmann, Hans-Joachim Traenckner | 1996-04-02 |
| 5476959 | Process for the preparation of dialkyl carbonates | Konrad Hable, Alexander Klausener, Heinz Landscheidt, Erich Wolters, Eberhard Zirngiebl | 1995-12-19 |
| 5235026 | Continuous production of polycarbonates | Claus Wulff, Hermann Kauth, Gunther Weymans, Wolfgang Alewelt, Jürgen Heuser | 1993-08-10 |
| 5233072 | Process for the preparation of dialkyl carbonates | Helmut Waldmann, Hans-Joachim Traenckner, Marko Zlokarnik, Reinhard Schomacker | 1993-08-03 |
| 4714689 | Process for the regeneration of catalysts for the gas-phase reduction of aromatic nitro compounds | Gunter Stammann, Helmut Waldmann, Joachim Schneider, Harald Medem | 1987-12-22 |