Issued Patents All Time
Showing 1–25 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6335470 | Method for producing variable mixtures of cyclohexylamine and dicyclohexylamine | Reinhard Langer | 2002-01-01 |
| 6124443 | Process for the hydrogenation of sugars | — | 2000-09-26 |
| 6111140 | Ru--Pd halogen-free catalyzers and method for producing cycloaliphatic amines | Hans-Josef Buysch, Otto Immel, Reinhard Langer | 2000-08-29 |
| 6037504 | Process for producing aliphatic diols | Wolfgang Dummer, Wilfried Niemeier | 2000-03-14 |
| 6031140 | Process for producing isocamphyl cyclohexanoles | Wilfried Niemeier | 2000-02-29 |
| 6020472 | Process for preparing .alpha.-D-glucopyranosido-1,6-mannitol and-sorbitol from .alpha.-D-glucopyranosido-1,6-fruetose | — | 2000-02-01 |
| 5952514 | Process for preparing succinic anhydride | — | 1999-09-14 |
| 5874648 | Process for preparing isocamphylcyclohexanols | — | 1999-02-23 |
| 5872276 | Process for preparing dialkyl succinates | — | 1999-02-16 |
| 5861521 | Process for the hydrogenation of esters of unsaturated fatty acids | — | 1999-01-19 |
| 5786521 | Process for preparing hydroxymethylcyclopropane | Lutz Frohn, Reinhard Langer | 1998-07-28 |
| 5770744 | Process for the preparation of succinic anhydride | — | 1998-06-23 |
| 5763717 | Process for preparing hydroxybiphenyl | Hans-Josef Buysch, Christine Mendoza-Frohn, Jurgen Scharschmidt, Ulrich Notheis, Rudolf J. Klee | 1998-06-09 |
| 5756864 | Process for preparing D,L-menthol from D-menthol | Gerd-Michael Petruck | 1998-05-26 |
| 5750803 | Process for the preparation of D,L-menthol | Gerd-Michael Petruck | 1998-05-12 |
| 5741929 | Process for preparing a mixture of amino-methyl-cyclohexanes and diamino-methyl-cyclohexanes | Gerd-Michael Petruck | 1998-04-21 |
| 5739404 | Process for preparing a mixture of amino-methyl-cyclohexanes and diamino-methyl-cyclohexanes | Gerd-Michael Petruck | 1998-04-14 |
| 5728883 | Process for preparing a mixture of cyclohexylamine and dicyclohexylamine | Wilfried Niemeier, Gerd-Michael Petruck | 1998-03-17 |
| 5728896 | Process for the preparation of hydroxymethyl-cyclopropane | Lutz Frohn, Reinhard Langer, Eberhard Zirngiebl, Jorg-Dietrich Jentsch, Bernd Pennemann +1 more | 1998-03-17 |
| 5705715 | Process for preparing 1,4-butanediol from maleic anhydride | — | 1998-01-06 |
| 5705700 | Process for preparing a mixture of cyclohexylamine and dicyclohexylamine | Gerd-Michael Petruck, Wilfried Niemeier | 1998-01-06 |
| 5696303 | Process for the preparation of aliphatic .alpha., .omega.-diols | Gerd-Michael Petruck, Heinz-Jurgen Alpers | 1997-12-09 |
| 5644044 | Process for the preparation of .alpha.-D-glucopyranosido-1,6-mannitol and -sorbitol from .alpha.-D-glucopyranosido-1, 6-fructose | — | 1997-07-01 |
| 5641872 | Process for the hydrogenation of sugars | — | 1997-06-24 |
| 5639917 | Process for preparing 1-(4-chlorophenyl)-4,4-dimethyl-pentan-3-one | — | 1997-06-17 |