Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5151548 | Benzyl alcohols and their lower alkanecarboxylic acid esters | Dieter Hermeling, Albrecht Harreus, Norbert Goetz, Jochen Wild, Hans Theobald +1 more | 1992-09-29 |
| 4956341 | 3-tert-butyl-40-methoxycyclohexylmethanol, its preparation and its use as a scent | Walter Gramlich, Ludwig Schuster | 1990-09-11 |
| 4950369 | Preparation of tetralin derivatives, and novel tetralin derivatives | — | 1990-08-21 |
| 4908481 | Preparation of 1-(4-hydroxy-phenyl)-butan-3-one and novel intermediates | Werner Hoffmann | 1990-03-13 |
| 4847425 | Prepartion of 4-isopropylcyclohexylmethanol and its alkyl ethers | Walter Gramlich, Wolfgang Lengsfeld, Ludwig Schuster | 1989-07-11 |
| 4820389 | Novel benzaldehyde dialkyl acetals and preparation and use thereof | Walter Gramlich, Franz Lanzendoerfer, Hardo Siegel | 1989-04-11 |
| 4814510 | Novel benzaldehyde derivatives, their preparation, and their use | Walter Gramlich, Heinz Hannebaum | 1989-03-21 |
| 4759832 | Preparation of biscarbamates and novel biscarbamates | Heinz Hannebaum | 1988-07-26 |
| 4699698 | Preparation of benzoic acid ortho-esters and novel compounds of this type | Eberhard Steckhan | 1987-10-13 |
| 4661217 | Preparation of carbamic acid esters | Heinz Hannebaum, Michael Steiniger | 1987-04-28 |
| 4654167 | p-Alkoxycyclohexylalkanols and p-alkoxycyclohexylalkyl esters and their use as scents | Walter Gramlich, Werner Hoffmann, Ludwig Schuster | 1987-03-31 |
| 4612092 | Preparation of aromatic carboxylates | Eberhard Steckhan, Karl-Heinz Grosse-Brinkhaus | 1986-09-16 |
| 4588482 | Preparation of phthalaldehyde acetals | — | 1986-05-13 |
| 4539081 | Preparation of benzaldehyde dialkyl acetals | Heinz Hannebaum, Hardo Siegel, Walter Gramlich | 1985-09-03 |
| 4441970 | Electrochemical preparation of 2,5-dialkoxy-2,5-dihydrofurans | Heinz Hannebaum | 1984-04-10 |
| 4431490 | Preparation of cyclopentadecanolide | Werner Hoffmann, Frank Thoemel | 1984-02-14 |
| 4411746 | Preparation of alkyl-substituted benzaldehydes | Hans Roos, Heinz Hannebaum | 1983-10-25 |
| 4350641 | 4-Tert.-butoxyphenylglycinonitrile and the preparation of D-(-)- and L-(+)-4-hydroxyphenylglycine | Hans J. Pander, Hardo Siegel | 1982-09-21 |
| 4298438 | Preparation of 4-tert.-butylbenzaldehyde | Hardo Siegel, Heinz Hannebaum | 1981-11-03 |
| 4284825 | 4-Substituted benzaldehyde-dialkylacetal | Manfred Barl, Hardo Siegel | 1981-08-18 |
| 4235683 | Electrolytic preparation of benzaldehydes | Hardo Siegel | 1980-11-25 |