Issued Patents All Time
Showing 25 most recent of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5543515 | Preparation of tertiary amine oxides | Ulrich Koehler, Hardo Siegel | 1996-08-06 |
| 5470502 | Fluorescent pigments | Erwin Hahn, Werner Ostertag | 1995-11-28 |
| 5420259 | Tryptanthrine derivatives | Andreas Guentner, Gerhard Wagenblast | 1995-05-30 |
| 5294480 | Moldings or sheets made from silica aerogels | Manfred Mielke | 1994-03-15 |
| 5137927 | Composite foams of low thermal conductivity | Bernardo Wolff, Frieder Hohwiller | 1992-08-11 |
| 5124364 | Composite foams of low thermal conductivity | Bernardo Wolff, Frieder Hohwiller | 1992-06-23 |
| 5122291 | Thermal insulating material based on pigment containing silica aerogels | Bernardo Wolff, Manfred Mielke, Werner Ostertag, Jochen Fricke, Roland Caps | 1992-06-16 |
| 5030727 | Preparation of thiazolo (2,3-b) zuinazolones | Gerhard Hamprecht, Norbert Meyer, Bruno Wuerzer | 1991-07-09 |
| 4960874 | Isothiazolylazo dyes having aminophenyl and aminonaphthyl components | Udo Bergmann, Johannes D. Dix, Guenter Hansen, Ernst Schefczik | 1990-10-02 |
| 4912006 | Electrostatic toner | Walter Breitschaft, Erwin Czech, Udo Mayer, Horst Bruder, Rainer Dyllick-Brenzinger | 1990-03-27 |
| 4845223 | Fluorescent aryloxy-substituted perylene-3,4,9,10-tetracarboxylic acid diimides | Andreas Stange | 1989-07-04 |
| 4784668 | Novel heterocycle-containing trisazo dyes | Walter Breitschaft, Udo Mayer | 1988-11-15 |
| 4764600 | Isothiazolylazo dyes having aminophenyl and aminonaphthyl components | Udo Bergmann, Johannes P. Dix, Guenter Hansen, Ernst Schefczik | 1988-08-16 |
| 4677199 | Reactive dyes containing substituted 4-fluoropyridaz-6-one radicals | Dietmar Augart, Heinz Eilingsfeld, Heinz-Wolfgang Krueger, Hartmut Lardon, Ortwin Schaffer | 1987-06-30 |
| 4667036 | Concentration of light over a particular area, and novel perylene-3,4,9,10-tetracarboxylic acid diimides | Ruediger Iden | 1987-05-19 |
| 4560751 | Preparation of N,N-disubstituted 2-aminothiazoles | — | 1985-12-24 |
| 4486221 | Thiazolo[2,3-b]quinazolones and their use for influencing plant growth | Bruno Wuerzer | 1984-12-04 |
| 4486587 | Concentration of light over a particular area and novel fluorescent compounds | — | 1984-12-04 |
| 4483795 | Substituted phenyl disazo dyes containing a 2-amino-substituted thiazole radical | Heinz Eilingsfeld, Guenter Hansen, Georg Zeidler | 1984-11-20 |
| 4473391 | Herbicides containing thiazolo[2,3-b]quinazolones as active ingredients, and their use for regulating plant growth | Bruno Wuerzer | 1984-09-25 |
| 4464284 | Mixtures of optical brighteners | — | 1984-08-07 |
| 4438282 | Preparation of sulfides | Hartmut Lardon | 1984-03-20 |
| 4407810 | Thiazol-2-yl-oxamic acid derivatives, and therapeutic agents containing these compounds | Heinz Eilingsfeld, Peter Neumann, Dieter Lenke, Ludwig Friedrich | 1983-10-04 |
| 4380514 | Preparation of optical brighteners | — | 1983-04-19 |
| 4379934 | Process for two-dimensionally concentrating light, and novel perylene-3,4,9,10-tetracarboxylic acid diimides | Fritz Graser | 1983-04-12 |