Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8128842 | Process for the preparation of an antistatic composition | Ernst Minder, Hugo Gross | 2012-03-06 |
| 6365781 | Process for the preparation of mercaptomethylphenois | Fabio Pizzoli, Gerrit Knobloch, Hans-Rudolf Meier | 2002-04-02 |
| 6191182 | Phenyl alkyl ketone substituted by cyclic amine and a process for the preparation thereof | Rinaldo Husler, Rudolf Schwabe | 2001-02-20 |
| 5977357 | Phenyl alkyl ketone substituted by cyclic amine and a process for the preparation thereof | Rinaldo Husler, Rudolf Schwabe | 1999-11-02 |
| 5795985 | Phenyl alkyl ketone substituted by cyclic amine and a process for the preparation thereof | Rinaldo Husler, Rudolf Schwabe | 1998-08-18 |
| 5258540 | Cyclohexyl substituted hydroxybenyzlphosphonates | Paul Dubs, Werner Stegmann, Roger Martin | 1993-11-02 |
| 5240975 | Liquid substituted 2H-benzotriazole mixtures, stabilized compositions | Roland A. E. Winter, Robert Detlefsen, Werner Stegmann, David G. Leppard | 1993-08-31 |
| 5229521 | Process for the preparation of symmetrical 2,2-methylenebisbenzotriazolyl phenols | Werner Stegmann | 1993-07-20 |
| 5157141 | Process for the preparation of hydroxybenzylphosphonates | Paul Dubs, Werner Stegmann, Roger Martin | 1992-10-20 |
| 5110978 | Process for the preparation of phenolic thiocarboxylic acid esters | Werner Stegmann | 1992-05-05 |
| 5095062 | Stabilized compositions containing liquid substituted 2H-benzotriazole mixtures | Roland A. E. Winter, Robert E. Detiefsen, Werner Stegmann, David G. Leppard | 1992-03-10 |
| 4973701 | Liquid substituted 2H-benzotriazole mixtures, stabilized compositions and processes for preparing the liquid mixtures | Werner Stegmann, David G. Leppard, Roland A. E. Winter, Robert Detlefsen | 1990-11-27 |
| 4921966 | Process for the preparation of liquid mixtures of alkylated 2-(2-hydroxyphenyl)benzotriazoles | Werner Stegmann | 1990-05-01 |
| 4874885 | Process for the preparation of mercaptomethylphenols | Werner Stegmann, Hans-Rudolf Meier, Samuel Evans, Roger Martin | 1989-10-17 |