Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6613934 | Enantiomerically enriched malonic acid monoesters substituted by a tertiary hydrocarbon radical, and their preparation | Udo Jegelka, Bruno Klotz-Berendes, Marcel Feld | 2003-09-02 |
| 6500980 | Process for preparing amino derivatives of C-H-acid compounds | Guenther Koehler, Frank Bauer | 2002-12-31 |
| 6399809 | Process for the preparation of amino acid derivatives | Marcel Feld | 2002-06-04 |
| 6248917 | Process for the preparation of 2-hydroxybenzonitrile | — | 2001-06-19 |
| 6143920 | Process for the preparation of methoxyacetic acid esters | Klaus-Dieter Steffen, Marcel Feld | 2000-11-07 |
| 6107522 | Process for the preparation of cyclopropylamine | Marcel Feld, Manfred Kaufhold | 2000-08-22 |
| 6100424 | Process for the preparation of amino acetic acid esters with a tertiary hydrocarbon radical in the .alpha.-position | — | 2000-08-08 |
| 6045662 | Process for preparing high-purity cyclopropyl methyl ketone | Guenther Koehler, Manfred Neumann | 2000-04-04 |
| 6002046 | Process for the preparation of cyclopropyl alkyl ketones | Manfred Kaufhold, Udo Jegelka, Michael Korell | 1999-12-14 |
| 5831119 | Process for the preparation of aminoacetic acids with a tertiary hydrocarbon radical in the .alpha.-position, or their nitriles | Frank Bauer, Marcel Feld | 1998-11-03 |
| 5767326 | Process for preparing hydroxymethylcyclopropane | Marcel Feld | 1998-06-16 |
| 5728873 | Process for the preparation of cyclopropanamine | Thomas Kalz | 1998-03-17 |
| 5659081 | Process for the preparation of cyclopropanecarboxamide | — | 1997-08-19 |
| 5569781 | Process for the preparation of 1-aminocyclopropanecarboxylic acid hydrochloride | Marcel Feld | 1996-10-29 |