Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4962231 | Preparation of D- or L-alanine or high enantiomeric purity | Axel Paul, Eckhard Roske, Hardo Siegel | 1990-10-09 |
| 4736040 | Preparation of 1,2-benzisothiazolones | Hagen Jaedicke | 1988-04-05 |
| 4493802 | Preparation of o,o'-dithiodibenzoic acids | Hagen Jaedicke | 1985-01-15 |
| 4464537 | Preparation of saccharin | Hagen Jaedicke | 1984-08-07 |
| 4427600 | Preparation of 1-alkyl-2-chloro-5-nitrobenzene-4-sulfonic acids | Elisabeth Mueller, Helmut Goerth | 1984-01-24 |
| 4421931 | Preparation of anthranilic acid amides | Winfried Ludwig, Gerhard Kilpper, Johannes Grimmer | 1983-12-20 |
| 4393211 | Preparation of aromatic sulfohalides | Hagen Jaedicke | 1983-07-12 |
| 4328339 | Continuous preparation of isatoic anhydride | Gerhard Kilpper, Johannes Grimmer, Hans Christoph Horn, Eckhard Hetzel | 1982-05-04 |
| 4306074 | Preparation of a mixture of an alkyl 3-chloroanthranilate and an alkyl 6-chloroanthranilate | Heinz-Guenter Oeser, Dietrich Mangold | 1981-12-15 |