Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6248865 | Compounds useful for the synthesis of dolastatin analogs | Wilhelm Amberg, Harald Bernard, Ernst Buschmann, Andreas Haupt, Bernd Janssen +7 more | 2001-06-19 |
| 5886147 | Compounds useful for the synthesis of dolastatin analogs | Wilhelm Amberg, Harald Bernard, Ernst Buschmann, Andreas Haupt, Bernd Janssen +7 more | 1999-03-23 |
| 5864012 | Active peptide and its preparation | Wilhelm Amberg, Harald Bernard, Ernst Buschmann, Andreas Haupt, Bernd Janssen +7 more | 1999-01-26 |
| 5523485 | Preparation of high-purity isobutyramide | Ernst Buschmann | 1996-06-04 |
| 5210192 | Process for the preparation of 3,7-dialkylxanthines | Marius Bugglin, Herbert Gropp, Ulrich Karl, Hans-Heinrich Lenz | 1993-05-11 |
| 5073538 | Cycloalkylidene derivatives and fragrance composition | Michael Heullmann, Rainer Becker, Gerald Lauterbach, Wolfgang Barth, Klaas Jansen | 1991-12-17 |
| 4935426 | N,N'-disubstituted piperazines | Matthias Zipplies, Hubert Sauter, Franz Roehl, Thomas Kuekenhoehner, Eberhard Ammermann +1 more | 1990-06-19 |
| 4914229 | Novel preparation of compounds of the 4-oxodamascone series, and novel scents from this class of compounds | Werner Hoffmann | 1990-04-03 |
| 4728747 | Novel 2,3-disubstituted bicyclo(2.2.1)heptanes and heptenes, their preparation, and their use as scents | Werner Hoffmann | 1988-03-01 |
| 4656272 | Preparation of s-triazine derivatives | Roland Martin | 1987-04-07 |
| 4585594 | Preparation of 4-substituted but-3-ene-1-carboxylic acids and their esters | Walter Himmele, Werner Hoffmann | 1986-04-29 |
| 4550211 | Preparation of compounds of the 4-oxodamascone series, and novel scents from this class of compounds | Werner Hoffmann | 1985-10-29 |
| 4517382 | 1-Formyl-tri- and tetramethyl-cyclohex-1-en-3-one oximes | Werner Hoffmann | 1985-05-14 |
| 4431844 | Preparation of polyunsaturated ketones | Werner Hoffmann, Lothar Arnold, Manfred Stroezel, Hans-Juergen Scheiper | 1984-02-14 |
| 4358614 | Preparation of .alpha.- and .beta.-cyclocitral, and the N-methylaldimines of these compounds | Werner Hoffmann | 1982-11-09 |