Issued Patents All Time
Showing 25 most recent of 110 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7074922 | Method for producing the tautomeric form of (1) of 2,4,6-trianilino-p-(carbo-1′-ethylhexyl-1′oxyl)-1, 3, 5-triazine | Helmut Gumbel, Heinz-Josef Kneuper, Gerhard Bertlein, Michael Drogemuller | 2006-07-11 |
| 6455711 | Method for producing polytetrahydrofuran | Karsten Eller, Michael Hesse, Arthur Hohn, Heinz Rutter | 2002-09-24 |
| 6410789 | Process for preparing aromatic polyamine mixtures | Karsten Eller, Hans-Werner Langensiepen, Michael Hesse | 2002-06-25 |
| 6362312 | Catalyst and method for the production of polytetrahydrofuran | Karsten Eller, Heinz Rutter, Michael Hesse | 2002-03-26 |
| 6359108 | Method for polymerizing cyclic ether | Karsten Eller, Frank Stein, Christoph Sigwart, Klaus-Dieter Plitzko, Rolf Fischer +1 more | 2002-03-19 |
| 6274700 | Catalyst and method for producing polytetrahydrofuran | Karsten Eller, Heinz Rutter, Michael Hesse | 2001-08-14 |
| 6262317 | Process for preparing 1,4-butanediol by catalytic hydrogenation of 1,4-butinediol | Franz Josef Brocker, Gerd Kaibel, Rolf Pinkos, Joachim Wulff-Doring | 2001-07-17 |
| 6252039 | Method for decoloring tetrahydrofuran polymers or copolymers | Karsten Eller, Michael Hesse | 2001-06-26 |
| 6211401 | Process for preparing polytetrahydrofuran | Karsten Eller, Christoph Sigwart, Klaus-Dieter Plitzko, Rolf Fischer, Frank Stein +2 more | 2001-04-03 |
| 6197979 | Method for producing polytetrahydrofuran with low color index | Karsten Eller, Heinz Rutter, Michael Hesse | 2001-03-06 |
| 6153784 | Removal of halides from halide-containing nitrile mixtures | Heinz-Josef Kneuper, Hans-Jurgen Weyer, Horst Neuhauser, Johann-Peter Melder, Andreas Henne +1 more | 2000-11-28 |
| 6147227 | Process for preparing phthalides | Klemens Massonne, Horst Neuhauser, Horst Zimmermann, Wolfgang Reif, Peter Cramers +1 more | 2000-11-14 |
| 6124368 | Method for producing polytetrahydrofuran | Karsten Eller, Christoph Sigwart, Klaus-Dieter Plitzko | 2000-09-26 |
| 6111147 | Process for preparing polytetrahydrofuran and derivatives thereof | Christoph Sigwart, Karsten Eller, Klaus-Dieter Plitzko, Rolf Fischer, Frank Stein +2 more | 2000-08-29 |
| 6043338 | Method of producing polyoxytetramethylene glycol | Christoph Sigwart, Rolf Fischer, Karsten Eller, Klaus-Dieter Plitzko, Gerd Heilen | 2000-03-28 |
| 6028204 | Process for preparing phthalides | Klemens Massonne, Wolfgang Reif, Horst Neuhauser, Andreas Gieseler, Klaus Mundinger | 2000-02-22 |
| 6020501 | Process for preparing phthalides | Klemens Massonne, Wolfgang Reif, Joachim Wulff-Doring | 2000-02-01 |
| 5939590 | Tetrahydrofuran/but-2-yne-1, 4-diol copolymers containing C-C triple bonds | Christoph Sigwart, Rolf Fischer, Klaus-Dieter Plitzko, Gerd Heilen, Christof Palm +1 more | 1999-08-17 |
| 5917039 | N-alkylation of amines | Joachim Simon, Rolf Lebkucher, Horst Neuhauser | 1999-06-29 |
| 5895816 | Preparation of alkylamines | Heinz-Josef Kneuper, Rolf Lebkucher, Horst Neuhauser, Andreas Henne | 1999-04-20 |
| 5894074 | Preparation of tertiary amines from nitriles and secondary amines | Eberhard Fuchs, Boris Breitscheidel, Horst Neuhauser | 1999-04-13 |
| 5847131 | Preparation of N-substituted cyclic amines | Joachim Simon, Roman Dostalek, Heinz Lingk, Andreas Henne, Rolf Lebkucher +3 more | 1998-12-08 |
| 5840981 | Process for producing N-methyl-2(3,4 dimethoxyphenyl)-ethylamine | Eberhard Fuchs, Horst Zimmermann, Tom Witzel, Boris Breitscheidel, Horst Nauhauser | 1998-11-24 |
| 5773648 | Preparation of polytetrahydrofuran | Christoph Sigwart, Michael Hesse, Rolf Fischer, Karsten Eller, Gerd Heilen +1 more | 1998-06-30 |
| 5747411 | Supported catalysts which are suitable for ammonoxidation | Lothar Karrer, Frank-Friedrich Pape, Ulrich Kohler, Peter Weidlich, Michael Hullmann +1 more | 1998-05-05 |