Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6414192 | Process for preparing 4-aminodiphenylamine | Michael Schelhaas, Dietmar Bielefeldt, Pieter Ooms, Joachim Haider, Manfred Jautelat +2 more | 2002-07-02 |
| 6242641 | Cycloaliphatic compounds | Manfred Jautelat, Hanns P. Muller, Manfred Hajek | 2001-06-05 |
| 6166256 | Process for preparing (4-nitro-sophenyl)phenylhydroxylamine | Henry Giera, Pieter Ooms, Michael Schelhaas, Christian Laue, Michaela Meiers +1 more | 2000-12-26 |
| 6054589 | Process for preparing 2-chloro-benzimidazole derivatives | Michael Conrad, Lutz Assmann, Heinz-Jurgen Wroblowsky, Dietmar Bielefeldt | 2000-04-25 |
| 6028200 | Process for preparing 2-chloro-benzimidazole derivatives | Michael Conrad, Lutz Assmann, Heinz-Jurgen Wroblowsky, Dietmar Bielefeldt | 2000-02-22 |
| 6001535 | Monomers with cyclic carbonate groups | Wolfgang Podszun, Ludger Heiliger, Michael Muller, Friedrich-Karl Bruder | 1999-12-14 |
| 5905170 | Process for the production of 1-amino-1-methyl-3(4)-aminomethylcyclohexane | Konrad Fischer, Oswald Wilmes, Dieter Arlt, Peter Maas, Pierre Louis Woestenborghs +1 more | 1999-05-18 |
| 5900507 | Process for the preparation of 1-amino-1-methyl-3(4)-aminomethyl cyclohexane | Konrad Fischer, Oswald Wilmes, Dieter Arlt, Peter Maas, Pierre Louis Woestenborghs +2 more | 1999-05-04 |
| 5877323 | Process for preparing 1-aryl-4-carbamoyl-tetrazolinones | Reinhard Lantzsch, Uwe Stelzer | 1999-03-02 |
| 5874586 | Process for preparing 1-aryl-4-carbamoyl-tetrazolinones | Reinhard Lantzsch, Uwe Stelzer | 1999-02-23 |
| 5814669 | Amino acid derivatives and their use as pesticides | Uwe Stelzer, Thomas Seitz | 1998-09-29 |
| 5808104 | Polymerizable aromatic carboxylic acids and carboxylic acid anhydrides with cyclic carbonate groups and formulations thereof | Wolfgang Podszun, Ludger Heiliger, Werner Finger, Martin Grunwald | 1998-09-15 |
| 5763622 | Urethane (meth) acrylates containing cyclic carbonate groups | Wolfgang Podszun, Joachim Krüger, Werner Finger, Ludger Heiliger | 1998-06-09 |
| 5675010 | Chloropyridinium chlorides and process for their preparation | Reinhard Lantzsch, Klaus Jelich, Christoph Mannheims, Knud Lawrenz | 1997-10-07 |
| 5621119 | Di(meth)acrylates having cyclic carbonate groups | Wolfgang Podszun, Klaus Schapers, Werner Finger, Ludger Heiliger | 1997-04-15 |
| 5541332 | Chloropyridinium chlorides and process for their preparation | Reinhard Lantzsch, Klaus Jelich, Christoph Mannheims, Knud Lawrenz | 1996-07-30 |
| 5276213 | Special dihydroxydiphenyl bicycloalkanes, their production and their use for the production of high molecular weight polycarbonates | Volker Serini, Uwe Westeppe, Gerd Fengler, Manfred Hajek, Helmut Waldmann | 1994-01-04 |
| 5227458 | Polycarbonate from dihydroxydiphenyl cycloalkane | Dieter Freitag, Uwe Westeppe, Claus Wulff, Karl-Herbert Fritsch, Gunther Weymans +2 more | 1993-07-13 |
| 5212280 | Polycarbonate from special dihydroxydiphenyl bicycloalkane | Volker Serini, Uwe Westeppe, Gerd Fengler, Manfred Hajek, Helmut Waldmann | 1993-05-18 |
| 5210328 | Process for the preparation of substituted cycloalkylidene bisphenols | Dieter Freitag, Claus Wulff, Alfred Eitel, Helmut Waldmann, Uwe Westeppe +3 more | 1993-05-11 |
| 5126428 | Polycarbonate from dihydroxy diphenyl cycloalkane | Dieter Freitag, Uwe Westeppe, Claus Wulff, Karl-Herbert Fritsch, Gunther Weymans +2 more | 1992-06-30 |
| 5010162 | Polycarbonate of alkyl cyclohexylidene bisphenol | Volker Serini, Dieter Freitag, Uwe Westeppe, Karsten-Josef Idel, Ulrich Grigo +2 more | 1991-04-23 |
| 5010163 | Polycarbonate of cycloalkylidene bisphenol | Volker Serini, Dieter Freitag, Uwe Westeppe, Karsten-Josef Idel, Ulrich Grigo +2 more | 1991-04-23 |
| 4982014 | Dihydroxydiphenyl cycloalkanes, their production and their use for the production of high molecular weight polycarbonates | Dieter Freitag, Uwe Westeppe, Claus Wulff, Karl-Herbert Fritsch, Gunther Weymans +2 more | 1991-01-01 |
| 4970286 | Thermotropic, fully aromatic polyesters having a low processing temperature, a process for their production and their use for the production of moldings, filaments, fibers and films | Joachim Genz, Volker Eckhardt, Karsten-Josef Idel | 1990-11-13 |