Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6613948 | Process for the preparation of 2,3,4,5-tetrafluorobenzene derivatives | Norbert Lui, Dietmar Bielefeldt, Michael Holzbrecher | 2003-09-02 |
| 5705594 | Polyamine crosslinking agent formulation and its preparation | Klaus Konig, Werner Rasshofer | 1998-01-06 |
| 5659088 | Process for the preparation of 4-fluorothiophenol | Helmut Fiege, Ferdinand Hagedorn, Wolfgang Eymann, Herbert Muller | 1997-08-19 |
| 4760209 | Process for preparing 3,5-dichloro-.alpha.-methylstyrene | Heinz U. Blank, Erich Wolters, Bernhard Beitzke, Karlfried Wedemeyer, Michael Herzhoff +2 more | 1988-07-26 |
| 4622429 | Process for the preparation of substituted benzaldehydes | Heinz U. Blank, Erich Wolters | 1986-11-11 |
| 4451644 | Process for the production of polyarylene (sulphides) having an increased thermal and chemical resistance and an improved color quality | Edgar Ostlinning, Karsten-Josef Idel, Ludwig Bottenbruch | 1984-05-29 |
| 4433138 | Process for the preparation of polyarylene sulphides | Karsten-Josef Idel, Dieter Freitag, Ludwig Bottenbruch | 1984-02-21 |
| 4233440 | Triazolyl-stilbenes | Alfons Dorlars | 1980-11-11 |
| 4217449 | Process for the preparation of bis-triazolylstilbenes | Alfons Dorlars | 1980-08-12 |