Issued Patents All Time
Showing 1–25 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4975516 | Diaminoarylsulfones useful for the preparation of polyurethane elastomers | Klaus-Peter Heise, Gerhard Grogler, Dieter Dieterich | 1990-12-04 |
| 4851596 | Process for nucleus-chlorination of aromatic hydrocarbons | Franz-Josef Mais, Helmut Fiege, Kai Rohlk | 1989-07-25 |
| 4827057 | Process for preparing 1,2-dichlorobenzene | Josef Kasbauer, Helmut Fiege, Herbert Schmidt | 1989-05-02 |
| 4820871 | Process for the preparation of N,N-diaryl-ureas | Wolfram Kissener, Joachim Franke, Helmut Fiege | 1989-04-11 |
| 4782190 | Process for the preparation of 4-nitrophenetol | Josef Kasbauer | 1988-11-01 |
| 4772428 | Impregnating agents and the use thereof | Rudolf Kron, Alfons Klein | 1988-09-20 |
| 4760209 | Process for preparing 3,5-dichloro-.alpha.-methylstyrene | Heinz U. Blank, Erich Wolters, Bernhard Beitzke, Michael Herzhoff, Karl-Wilhelm Henneke +2 more | 1988-07-26 |
| 4755609 | Process for the preparation of thiocyanatomethylthiobenzothiazoles | Gerold Schade, Herbert Diehl | 1988-07-05 |
| 4740333 | Process for the preparation of 5-fluorotoluene-2,4-disulphochloride | Herbert Diehl, Josef Kasbauer | 1988-04-26 |
| 4701515 | Thermotropic aromatic polyester from 3,3'-diphenyl-4,4'-dihydroxy biphenyl and arylene dicarboxylic acid | Hans-Rudolf Dicke, Ludwig Bottenbruch, Klaus-Christian Paetz, Aziz El Sayed | 1987-10-20 |
| 4670608 | Preparation of 2,4-dichloro-3-alkyl-6-nitrophenols | Christian Paetz | 1987-06-02 |
| 4650910 | Process for the preparation of substituted styrenes | Karl-Wilhelm Henneke | 1987-03-17 |
| 4628097 | Process for the preparation of 2-amino-alkylpyridines | Helmut Le Blanc, Lothar Puppe | 1986-12-09 |
| 4609760 | Process for the preparation of 2,6-xylidine | Siegfried Bohm, Helmut LeBlanc | 1986-09-02 |
| 4594467 | Preparation of 3,5-dichloro-.alpha.-methylstyrene | Karl-Wilhelm Henneke, Herbert Diehl | 1986-06-10 |
| 4588433 | Phenoxymethane derivatives for regulating plant growth | Hans-Georg Schmitt, Klaus Lurssen | 1986-05-13 |
| 4568672 | 3,6-Disubstituted 2-thioxo-1,3,5-thiadiazin-4-ones | Wilhelm Brandes, Rolf Bunnenberg, Gerd Hanssler, Paul Reinecke | 1986-02-04 |
| 4565829 | Fungicidal 2-thiocyanato-benzamides | Hans-Georg Schmitt, Wilhelm Brandes, Paul Reinecke | 1986-01-21 |
| 4544372 | Process for improving the light fastness of polyamide dyeings | Klaus-Peter Heise, Robert Kuth, Karl Neufang, Hellmuth Pantke | 1985-10-01 |
| 4496763 | Process for the preparation of alkyl-substituted anilines | Helmut Le Blanc | 1985-01-29 |
| 4489210 | Process for the halogenation of organic compounds | Helmut Judat, Ulrich Schnegg | 1984-12-18 |
| 4460788 | Process for preparation of anilines which are m-substituted by chlorine | Ferdinand Hagedorn, Werner Evertz | 1984-07-17 |
| 4429156 | Process for the preparation of m-halogen-substituted anilines | Ferdinand Hagedorn, Werner Evertz | 1984-01-31 |
| 4426538 | Process for the preparation of optionally p-chlorine-substituted 2,6-diaminotoluene | Klaus-Peter Heise, Ernst Schneider | 1984-01-17 |
| 4410869 | Dielectric impregnating fluid and its use | Alfons Klein, Lothar Havenith, Rolf Kron | 1983-10-18 |