Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5456935 | Food products | Manfred Kühnert, Anton F. Haase | 1995-10-10 |
| 5380862 | Preparation of isomer-free 2,5-dichloro-pyridine | Stefan Sendelbach, Wolfgang Weiss, Winfried Orth, Albrecht Laufer | 1995-01-10 |
| 5271772 | Hazardous chemical decontamination process | Urs N. Riede, Bernhard Seubert | 1993-12-21 |
| 5169990 | Preparation of 9,9-bis-(4-hydroxyphenyl)-fluorene | Winfried Orth, Emmerich Pastorek, Wolfgang Weiss | 1992-12-08 |
| 5149886 | Preparation of 9,9-bis-(4-hydroxyphenyl)-fluorene | Winfried Orth, Emmerich Pastorek, Wolfgang Weiss | 1992-09-22 |
| 5082944 | Production of pyridine-3-sulfonic acid | Rolf Losch, Winfried Orth, Wolfgang Weiss | 1992-01-21 |
| 5066806 | Novel separation process | Emmerich Pastorek, Winfried Orth, Wolfgang Weiss | 1991-11-19 |
| 4942239 | Process for the production of 2-hydroxypyridine | Winfried Orth, Michael Gerhard Hassler, Wolfgang Weiss | 1990-07-17 |
| 4925942 | Preparation of quinuclidine-3-methanol | Josef Gotz, Winfried Orth, Wolfgang Weiss, Bernd Rapp | 1990-05-15 |
| 4865620 | Hair dye composition | Winfried Orth, Wolfgang Weiss | 1989-09-12 |