Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8536341 | Primary allylic alcohol and Ag | Werner Bonrath, Jean-Francois Eckhard, Ramona Hinze, Wolfgang Holderich, Michael H. Valkenberg | 2013-09-17 |
| 5616817 | Preparation of 1,2-propanediol | Ludwig Schuster | 1997-04-01 |
| 5523420 | Preparation of alpha-tocopherol and alpha-tocopheryl acetate in liquid or supercritical carbon dioxide | Rainer Lowack, Joachim Meyer, Paul Grafen | 1996-06-04 |
| 5107004 | 2-neopentylanthraquinone, processes for its preparation and methods for its use | Jochen Henkelmann, Walter Grosch | 1992-04-21 |
| 4987229 | Purification of salts of riboflavin 5'-phosphate, in particular of monosodium riboflavin 5'-phosphate | Walter Dobler, Joachim Paust | 1991-01-22 |
| 4940805 | Preparation of 1,4-butanediol or tetrahydrofuran or both | Rolf Fischer, Hans-Juergen Gosch, Wolfgang Harder, Klaus-Dieter Malsch, Lothar Franz +5 more | 1990-07-10 |
| 4931428 | 1-tert-butoxy-.omega.-alkenes and their use as scents | Rainer Becker, Heinz Eckhardt, Gerhard Schindler, Klaas Jansen | 1990-06-05 |
| 4925940 | Preparation of cyclic N,N'-dimethylureas | Lothar Franz, Dieter Voges | 1990-05-15 |
| 4895984 | Acylation of aromatics | Hardo Siegel, Alfred Schuhmacher, Walter Grosch, Jochem Henkelmann | 1990-01-23 |
| 4891435 | Preparation of 4,4-dimethyltetrahydrofuran-2,3-dione | Klaus Halbritter | 1990-01-02 |
| 4867912 | Highly heat-resistant polyaryl ether ketones | Gerhard Heinz, Juergen Koch, Jochem Henkelmann, Helmut Muenstedt, Peter Ittemann | 1989-09-19 |
| 4853481 | Preparation of alkyl-substituted aromatic ketones | Jochem Henkelmann, Walter Grosch, Alfred Schuhmacher, Hardo Siegel | 1989-08-01 |
| 4837296 | Preparation of polyaryl ether ketones | Gerhard Heinz, Juergen Koch, Jochem Henkelmann | 1989-06-06 |
| 4835242 | Aryl ether ketones | Jochem Henkelmann, Gerhard Heinz, Juergen Koch | 1989-05-30 |
| 4820882 | Preparation of beta-aryl alcohols | Heinz Eckhardt | 1989-04-11 |
| 4816606 | Continuous preparation of aldehydes and ketones | Karl Brenner, Wilhelm Ruppel, Harald Schultheiss, Hans-Ulrich Scholz | 1989-03-28 |
| 4707549 | Preparation of esters of optically active 2-arylalkanoic acids | Gerhard Fritz, Hardo Siegel | 1987-11-17 |
| 4594456 | Racemic and optically active 3-hydroxy-alpha-cyclocitral, its acetals and optically active 3-oxo-alpha-cyclocitral acetals, and their preparation | Ulrich Schaefer-Luederssen, Hagen Jaedicke, Joachim Paust | 1986-06-10 |