Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5886232 | Process for preparing substituted cyclohexanones | Alexander Klausener, Eberhard Zirngiebl, Wolfgang Kiel | 1999-03-23 |
| 5756824 | Process for the preparation of carbazates | Edwin Ritzer, Alexander Klausener | 1998-05-26 |
| 5744663 | Process for preparing cyclopentyl bromide | Alexander Klausener, Matthias Stenger, Paul Wagner | 1998-04-28 |
| 5648500 | Process for the preparation of substituted 1,2,3,4-tetrahydrocarbazoles | Alexander Klausener, Eberhard Zirngiebl, Jorg-Dietrich Jentsch | 1997-07-15 |
| 5648570 | Process for preparing substituted chloroaromatics | Witold Broda, Alexander Klausener | 1997-07-15 |
| 5649322 | Process for the preparation of C.sub.1 -C.sub.4 -alkyl nitrites | Paul Wagner, Zoltan Kricsfalussy, Alexander Klausener | 1997-07-15 |
| 5562887 | Purification of alkyl nitrite-containing exhaust gases | Kaspar Hallenberger, Paul Wagner, Alexander Klausener | 1996-10-08 |
| 5552130 | Process for the continuous preparation of nitrosyl chloride | Helmut Kraus, Alexander Klausener | 1996-09-03 |
| 5545754 | Process for the preparation of p-amino-phenols | Alexander Klausener, Heinz U. Blank | 1996-08-13 |
| 5543548 | Process for the preparation of dimethyl carbonate | Erich Wolters, Paul Wagner, Alexander Klausener | 1996-08-06 |
| 5498744 | Process for the preparation of dimethyl carbonate | Joerg-Dietrich Jentsch, Alexander Klausener, Bernd Lenders, Bernd Pennemann, Erich Wolters +1 more | 1996-03-12 |
| 5478960 | Process for the preparation of heterosubstituted acetals | Alexander Klausener | 1995-12-26 |
| 5476959 | Process for the preparation of dialkyl carbonates | Konrad Hable, Alexander Klausener, Zoltan Kricsfalussy, Erich Wolters, Eberhard Zirngiebl | 1995-12-19 |
| 5455368 | Process for separating off methanol from a mixture of dimethyl carbonate and methanol | Ingo Janisch, Werner Struver, Alexander Klausener | 1995-10-03 |
| 5449806 | Process for the preparation of dialkyl carbonates | Alexander Klausener, Reinhard Langer, Paul Wagner | 1995-09-12 |
| 5414104 | Process for preparing dialkyl carbonates | Joerg-Dietrich Jentsch, Alexander Klausener, Erich Wolters, Eberhard Zirngiebl | 1995-05-09 |
| 5412147 | Process for the continuous preparation of alkyl nitrites | Paul Wagner, Alexander Klausener | 1995-05-02 |
| 5360922 | Process for the preparation of dialkyl carbonates | Erich Wolters, Alexander Klausener, Lothar Puppe | 1994-11-01 |
| 5319124 | Process for the preparation of dialkyl carbonates | Erich Wolters, Alexander Klausener, Lothar Puppe | 1994-06-07 |
| 5304680 | Process for the preparation of aromatic amines which are substituted by C.sub.1 -C.sub.4 -alkoxy in the p-position | Alexander Klausener, Heinz U. Blank | 1994-04-19 |
| 5302742 | Process for the preparation of N-acylated p-amino-phenols | Alexander Klausener, Heinz U. Blank | 1994-04-12 |
| 5288894 | Process for the preparation of dialkyl carbonates | Erich Wolters, Alexander Klausener, Heinz U. Blank, Udo Birkenstock | 1994-02-22 |
| 5235087 | Process for the preparation of dialkyl carbonates | Alexander Klausener, Heinz U. Blank, Walter Kipshagen | 1993-08-10 |
| 5231213 | Process for the preparation of dialkyl carbonates | Alexander Klausener, Erich Wolters, Heinz U. Blank, Udo Birkenstock | 1993-07-27 |