Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4762929 | Aromatization of saturated nitrogen-containing heterocycles | — | 1988-08-09 |
| 4720327 | Distillative separation of liquid mixtures of substances | Werner Aquila, Axel Nissen, Gerd Kaibel, Michael Horner | 1988-01-19 |
| 4647344 | Recovery of isoprene from a C.sub.5 -hydrocarbon mixture | Alfred Lindner, Ulrich Wagner, Klaus Volkamer | 1987-03-03 |
| 4645863 | Process for the preparation of unsaturated alcohols and/or esters thereof | Helmut Nickels | 1987-02-24 |
| 4613683 | Preparation of alkyl gallates | Helmut Nickels | 1986-09-23 |
| 4521602 | Preparation of pyridines or pyrroles from .alpha.,.omega.-dinitriles | Gerd Heilen, Klaus Halbritter, Wolfgang Franzischka | 1985-06-04 |
| 4479016 | Ethoxylates of diacetylene alcohols and the use of these compounds as surfactants | Erhard Klahr, Axel Nissen, Wolfgang Trieselt, Albert Hettche | 1984-10-23 |
| 4386208 | Preparation of N-alkylpiperidines and N-alkylpyrrolidines | Juergen Schossig, Wolfgang Reiss, Dieter Voges | 1983-05-31 |
| 4319055 | Process for removing formaldehyde from aqueous solutions of but-2-yne-1,4-diol | Gerd Heilen, Werner Fliege | 1982-03-09 |
| 4310709 | Manufacture of but-2-en-1-ol compounds by isomerizing the corresponding but-3-en-1-ol compounds | — | 1982-01-12 |
| 4310705 | Preparation of higher unsaturated ketones | Axel Nissen, Gerd Kaibel, Otto Woerz, Lothar Arnold, Manfred Braun | 1982-01-12 |
| 4298702 | Process for the manufacture of flame retardant polystyrene foams | Klaus Hahn, Klaus Hinselmann, Klaus Halbritter, Heinz Weber | 1981-11-03 |
| 4288636 | Preparation of citral | Axel Nissen, Werner Aquila | 1981-09-08 |
| 4250070 | Aqueous dispersions, containing hydrazine derivatives, of carbonyl-containing copolymers | Gregor Ley, Erich Penzel, Kaspar Bott | 1981-02-10 |
| 4206126 | Preparation of cyclic .alpha.,.beta.-unsaturated ethers | — | 1980-06-03 |