Issued Patents All Time
Showing 25 most recent of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5968484 | Cosmetic preparations comprising photostable UV-A filters | Thorsten Habeck, Volker Schehlmann, Horst Westenfelder, Thomas Wunsch | 1999-10-19 |
| 5710228 | Maleimide/.alpha.-olefin copolymers and their use as light stabilizers and stabilizers for organic material | Alfred Krause, Walter Denzinger, Albert Hettche, Hubert Trauth | 1998-01-20 |
| 5670613 | N-vinyl-containing glycoluril derivatives and their use as light stabilizers and stabilizers for organic material | Alfred Krause, Eckhard Korona, Hubert Trauth | 1997-09-23 |
| 5624981 | Polyalkylpiperidine containing acetic acid and 3-amino-acrylic acid derivatives | Martin Holderbaum, Hubert Trauth | 1997-04-29 |
| 5610210 | Aminovinylphosphonic ester stabilizers for organic material | Martin Holderbaum, Hubert Trauth | 1997-03-11 |
| 5504211 | Polyalkylpiperidinyl-containing .beta.-aminoacrylic ester derivatives | Alfred Krause, Hubert Trauth | 1996-04-02 |
| 5496877 | Amino compounds as processing stabilizers for thermoplastic materials | Hubert Trauth | 1996-03-05 |
| 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 | Martin Holderbaum, Hubert Trauth | 1995-08-22 |
| 5434202 | N-(.beta.-carbony- and .beta.-cyanovinyl)-2,2,6,6-tetramethyl-piperidine derivatives | Alfred Krause, Hubert Trauth | 1995-07-18 |
| 5298592 | Preparation of polyaryl ethers with nitrogen compound catalysts | Wolfgang Eberle, Gerhard Heinz, Bernd Hupfeld, Christiane Husemann, Juergen Koch +1 more | 1994-03-29 |
| 5266320 | Aminovinyl-substituted heterocyclic compounds as stabilizers for organic materials | Martin Holderbaum, Hubert Trauth | 1993-11-30 |
| 5256826 | Preparation of aromatic carbonyl or sulfonyl compounds with an aryl ether structure | Erwin Hahn, Heinrich J. Eilingsfeld, Helmut Reichelt, Bernd Hupfeld | 1993-10-26 |
| 5248778 | Polyalkylpiperidine compounds | Hubert Trauth | 1993-09-28 |
| 5239072 | Polyalkylpiperidine compounds | Hubert Trauth | 1993-08-24 |
| 5145966 | Cyclic amides | Hubert Trauth | 1992-09-08 |
| 5118859 | Preparation and purification of 2-hydroxy-4-(2'-hydroxyethoxy)phenyl aryl ketones | Wolfgang Goetze | 1992-06-02 |
| 5076808 | Dyeing of polyamide substrates with an organic N-nitroso-hydroxylamine as light stabilizer | Erwin Hahn, Wolfgang Reuther, Reinhold Krallmann, Dieter Wegerle | 1991-12-31 |
| 5072034 | Preparation of 4-alkoxy-2-hydroxybenzophenone-5-sulfonic acids | Peter Neumann, Heinz Eilingsfeld | 1991-12-10 |
| 5017702 | 2,6-polyalkyl-4-piperidylamides, use thereof as stabilizers, in particular for plastics, and organic material containing same | Peter Neumann, Hubert Trauth | 1991-05-21 |
| 5008312 | 2,6-polyalkylpiperidine-substituted bislactams and their use for the stabilization of organic material, in particular of plastics, and materials stabilized therewith | Peter Neumann, Hubert Trauth | 1991-04-16 |
| 4990680 | Process for the preparation of 2,4-dihydroxybenzophenone | Peter Neumann | 1991-02-05 |
| 4981969 | Polyalkylpiperidine-substituted tetrahydropyridones and use thereof | Peter Neumann, Hubert Trauth | 1991-01-01 |
| 4980512 | Preparation of 2-hydroxy-4-alkoxybenzophenones | Peter Neumann | 1990-12-25 |
| 4980476 | Polyalkylpiperidine-substituted lactams and use thereof as stabilizers for plastics | Peter Neumann, Hubert Trauth | 1990-12-25 |
| 4976889 | 4-formylaminopiperidine derivatives, their use as stabilizers and organic material stabilized with the said derivatives | Peter Neumann, Hubert Trauth | 1990-12-11 |