Issued Patents All Time
Showing 26–50 of 98 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6448455 | TMP/Vapor pressure filtration | Paul Wagner | 2002-09-10 |
| 6441170 | Method of producing 4,6-dichloropyrimidine with acid chlorides | Franz-Josef Mais, Gunther Cramm, Guido Steffan | 2002-08-27 |
| 6441171 | Method for the production of 4,6-dichloropyrimidine with the aid of phosgene | Franz-Josef Mais, Gunther Cramm, Guido Steffan | 2002-08-27 |
| 6441254 | Process for preparing trimethylol compounds and formic acid | Frank Dobert, Paul Wagner, Wolfgang Eymann, Rolf Feller | 2002-08-27 |
| 6392057 | Method for the production of n,n′-carbonyldiazoles | Johannes Scherer, Robert Sollner | 2002-05-21 |
| 6350779 | Piece-form calcium formate | Achim Noack, Hanspeter Baumgartner, Gunter Linde | 2002-02-26 |
| 6204413 | Process for the preparation of salts of 1-substituted 2,4-diaminobenzenes | Lars Rodefeld, Horst Behre | 2001-03-20 |
| 6198007 | Process for the preparation of 1-substituted 2,4-dinitrobenzenes | Lars Rodefeld, Ferdinand Hagedorn | 2001-03-06 |
| 6133480 | Preparation of N-phenyl-1-naphthylamine | Horst Behre, Helmut Fiege, Wolfgang Eymann, Frank Arndt, Rudolf Wiemers | 2000-10-17 |
| 6100433 | Process for preparing 3-methoxy-1-propanol | Frank Dobert, Bernd-Michael Konig, Paul Wagner | 2000-08-08 |
| 6054618 | Preparation of N-phenyl-1-naphthylamine | Hanspeter Baumgartner, Lutz Frohn, Frank Arndt | 2000-04-25 |
| 5886232 | Process for preparing substituted cyclohexanones | Heinz Landscheidt, Eberhard Zirngiebl, Wolfgang Kiel | 1999-03-23 |
| 5856516 | Process for the preparation of carbazole | Hans-Josef Buysch, Reinhard Langer, Ulrich Notheis | 1999-01-05 |
| 5756824 | Process for the preparation of carbazates | Heinz Landscheidt, Edwin Ritzer | 1998-05-26 |
| 5744663 | Process for preparing cyclopentyl bromide | Heinz Landscheidt, Matthias Stenger, Paul Wagner | 1998-04-28 |
| 5681957 | Process for the preparation of substituted 2-fluoro-pyrimidines | Erich Wolters, Guido Steffan | 1997-10-28 |
| 5648500 | Process for the preparation of substituted 1,2,3,4-tetrahydrocarbazoles | Heinz Landscheidt, Eberhard Zirngiebl, Jorg-Dietrich Jentsch | 1997-07-15 |
| 5648570 | Process for preparing substituted chloroaromatics | Heinz Landscheidt, Witold Broda | 1997-07-15 |
| 5649322 | Process for the preparation of C.sub.1 -C.sub.4 -alkyl nitrites | Heinz Landscheidt, Paul Wagner, Zoltan Kricsfalussy | 1997-07-15 |
| 5562887 | Purification of alkyl nitrite-containing exhaust gases | Heinz Landscheidt, Kaspar Hallenberger, Paul Wagner | 1996-10-08 |
| 5552130 | Process for the continuous preparation of nitrosyl chloride | Helmut Kraus, Heinz Landscheidt | 1996-09-03 |
| 5545754 | Process for the preparation of p-amino-phenols | Heinz Landscheidt, Heinz U. Blank | 1996-08-13 |
| 5543548 | Process for the preparation of dimethyl carbonate | Heinz Landscheidt, Erich Wolters, Paul Wagner | 1996-08-06 |
| 5498744 | Process for the preparation of dimethyl carbonate | Joerg-Dietrich Jentsch, Heinz Landscheidt, Bernd Lenders, Bernd Pennemann, Erich Wolters +1 more | 1996-03-12 |
| 5484903 | Process for the production of polysaccharide carbonates | Klaus Szablikowski, Hans-Josef Buysch | 1996-01-16 |