Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6007828 | Cosmetic preparations containing photostable UV-A filters | Alexander Aumuller, Karin Sperling, Horst Westenfelder, Thomas Wunsch | 1999-12-28 |
| 5917080 | Preparation of 2-cyano-3,3-diarylacrylic esters | Karl Beck, Alexander Aumuller, Tom Witzel, Guido Voit | 1999-06-29 |
| 5904814 | Removal of water and ammonia from benzophenone imine reactor effluents | Guido Voit, Matthias Dernbach, Karl Beck, Hans-Jurgen Weyer | 1999-05-18 |
| 5821380 | 2-cyanoacrylic esters | Alexander Aumuller, Hubert Trauth, Guido Voit, Karin Sperling, Alfred Krause | 1998-10-13 |
| 5821292 | 3-arylacrylic acid ester light-protection stabilizers for organic material | Alexander Aumuller, Wolfgang Goetze, Jurgen Krockenberger, Hubert Trauth | 1998-10-13 |
| 5756807 | Preparation of alkyl cyanoacetates | Clemens Grund, Helmut Reichelt, Stefan Beckmann | 1998-05-26 |
| 5679855 | Preparation of benzophenone imines | Guido Voit, Tom Witzel, Alexander Aumuller | 1997-10-21 |
| 5624981 | Polyalkylpiperidine containing acetic acid and 3-amino-acrylic acid derivatives | Alexander Aumueller, Hubert Trauth | 1997-04-29 |
| 5610210 | Aminovinylphosphonic ester stabilizers for organic material | Alexander Aumueller, Hubert Trauth | 1997-03-11 |
| 5443820 | Esters and amides of aminomethylenecyanoacetic acid a cosmetic preparation containing the same as a sunscreen agent and a method for protecting human skin using the same | Alexander Aumueller, Hubert Trauth | 1995-08-22 |
| 5266320 | Aminovinyl-substituted heterocyclic compounds as stabilizers for organic materials | Alexander Aumueller, Hubert Trauth | 1993-11-30 |