Issued Patents All Time
Showing 101–123 of 123 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5614646 | Selective hydrogenation of aromatic groups in the presence of epoxy groups | Thomas Wettling, Ludwig Schuster | 1997-03-25 |
| 5603813 | Purifying distillation of vinyl formate | Thomas Ruhl, Marc Heider, Ralf-Thomas Rahn, Harald Rust | 1997-02-18 |
| 5587503 | Preparation of silicon-containing vinyl ethers and vinyl thioethers | Marc Heider, Michael Karcher | 1996-12-24 |
| 5543568 | Preparation of .alpha.,.beta.-unsaturated .beta.-oxycarboxylic acid chlorides | Lutz F. Tietze | 1996-08-06 |
| 5536854 | Preparation of 2-methyl-1,4-butanediol and 3-methyltetrahydrofuran | Hans-Juergen Weyer, Rolf Fischer, Franz Merger, Juergen Frank, Hardo Siegel +1 more | 1996-07-16 |
| 5530147 | Selective hydrogenation of aromatic groups in the presence of epoxy groups | Thomas Wettling, Ludwig Schuster | 1996-06-25 |
| 5395960 | Preparation of vinyl carboxylates | Marc Heider, Thomas Ruehl | 1995-03-07 |
| 5396006 | Preparation of alkenes and of cyclopentane and cyclohexane | Thomas Wettling | 1995-03-07 |
| 5319148 | Preparation of pyrocatechol monoethers and pyrocatechols | Michael Karcher, Horst Zimmermann | 1994-06-07 |
| 5296614 | Preparation of phthalides | Thomas Ruehl, Horst Zimmermann | 1994-03-22 |
| 5274164 | Preparation of aryl chloroformates | Thomas Wettling, Irene Troetsch-Schaller, Hermann Koehler | 1993-12-28 |
| 5252755 | Preparation of 4-hydroxymethyltetrahydropyrans | Thomas Ruehl, Horst Zimmermann, Norbert Goetz, Wolfgang Spiegler, Thomas Kuekenhoehner | 1993-10-12 |
| 5200163 | Removal of phosgene from off-gases | Thomas-Michael Kahl, Irene Troetsch-Schaller, Leopold Hupfer, Wolfgang Franzischka, Wolfgang Schwarz | 1993-04-06 |
| 5200560 | Preparation of carboxylic chlorides | Thomas-Michael Kahl, Leopold Hupfer, Wolfgang Franzischka, Wolfgang Schwarz | 1993-04-06 |
| 5196611 | Preparation of alkyl, alkenyl, and alkynyl chlorides | Irene Troetsch-Schaller, Thomas Wettling, Thomas-Michael Kahl, Leopold Hupfer, Wolfgang Franzischka +1 more | 1993-03-23 |
| 5136089 | Acylation of alkyl aromatic hydrocarbons | Hardo Siegel | 1992-08-04 |
| 4967015 | Polytetrahydrofuran vinyl ethers | Michael Karcher, Heinz Eckhardt | 1990-10-30 |
| 4950756 | Preparation of 1-nitroanthraquinone-2-carboxylic acid | Helmut Hoch, Thomas-Michael Kahl, Gerhard Kilpper, Walter Maier | 1990-08-21 |
| 4895984 | Acylation of aromatics | Manfred Eggersdorfer, Hardo Siegel, Alfred Schuhmacher, Walter Grosch | 1990-01-23 |
| 4867912 | Highly heat-resistant polyaryl ether ketones | Gerhard Heinz, Juergen Koch, Manfred Eggersdorfer, Helmut Muenstedt, Peter Ittemann | 1989-09-19 |
| 4853481 | Preparation of alkyl-substituted aromatic ketones | Manfred Eggersdorfer, Walter Grosch, Alfred Schuhmacher, Hardo Siegel | 1989-08-01 |
| 4837296 | Preparation of polyaryl ether ketones | Gerhard Heinz, Juergen Koch, Manfred Eggersdorfer | 1989-06-06 |
| 4835242 | Aryl ether ketones | Manfred Eggersdorfer, Gerhard Heinz, Juergen Koch | 1989-05-30 |