Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4892686 | Process for the preparation of 1-nitroanthraquinone | Walter Fischer | 1990-01-09 |
| 4770818 | Process for the preparation of 1-aminoanthraquinones | Eric Plattner, Gottfried Seifert | 1988-09-13 |
| 4642350 | Novel process for preparation of benzotriazoles using aryldiols and quinones | Alexander Davatz | 1987-02-10 |
| 4543214 | Process for the preparation of bromoanthraquinones | Johann Regli | 1985-09-24 |
| 4507240 | Process for purifying crude monochloro- and monobromoanthraquinone | Johann Regli | 1985-03-26 |
| 4210766 | Process for producing 2-halo-4-bromophenols | Anton Hungerbuhler | 1980-07-01 |
| 4191621 | Process for the production of substituted benzal and benzyl bromides | Jean Riethmann, Franz Marti | 1980-03-04 |