Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6488818 | Removal of impurities from 3-(2′-acetoxyethyl)-dihydro-2(3H)furanone | Volker Maywald, Horst Hartmann, Norbert Gotz, Hartmann Konig | 2002-12-03 |
| 6211397 | Process for the preparation of .alpha.-chloromethylene-triorganylphosphorane derivatives | Bernd Schaefer, Ernst Buschmann | 2001-04-03 |
| 5677452 | Process for the manufacture of 5-dichloroacetyl-3,3,6-trimethyl-9-oxo-1,5-diazabicyclo4.3.0! nonane | Winfried Richarz, Knut Koob | 1997-10-14 |
| 5428174 | Preparation of .alpha.,.beta.-unsaturated ketones | Winfried Richarz | 1995-06-27 |
| 5324843 | Process for making 3,4,5,6-tetrahydrophthalimide derivatives | Lothar Rueb, Karl Eicken, Bernd Schaefer, Peter Schaefer | 1994-06-28 |
| 5310915 | Process for the purification of 7-chloroquinoline-8-carboxylic acids | Knut Koob, Winfried Richarz | 1994-05-10 |
| 5245041 | Preparation of heterocyclic-cyclohexanedione derivatives | Winfried Richarz | 1993-09-14 |
| 5149882 | Purification of 2-chloro-5-nitrobenzaldehyde or acetals thereof | Bernd Schaefer, Wolfgang Freund | 1992-09-22 |
| 5118856 | Preparation of cyclohexane-dione derivatives | Winfried Richarz | 1992-06-02 |
| 5080794 | Separation of 1-methoxy-2-propanol and water | Joseph Krug, Knut Koob | 1992-01-14 |
| 4868308 | Preparation of N-phenyl(pyridyl) sulfonyldiamides | Hans Rupert Merkle, Albrecht Mueller, Gerhard Hamprecht | 1989-09-19 |
| 4820704 | Pyridazinone derivatives and their use as fungicides | Winfried Richarz, Ernst-Heinrich Pommer, Eberhard Ammermann | 1989-04-11 |
| 4788324 | Preparation of o-(1-methoxy-2-chloro)-ethoxyphenyl N-methylcarbamate | Siegfried Kersten, Detlef Doehnert | 1988-11-29 |
| 4748250 | Diastereoselective reduction of alpha-triazolylketones to betatriazolylcarbinols | Peter C. Thieme, Hubert Sauter | 1988-05-31 |
| 4670567 | Process for the preparation of 5,6-dihydro-2H-thiopyran-3-carboxaldehyde derivatives wherein the reactions are conducted in a high boiling mineral oil without a catalyst | Manfred Sauerwald, Toni Dockner, Wolfgang Rohr | 1987-06-02 |
| 4629799 | Preparation of 3-formyltetrahydrothiopyrans | Norbert Goetz, Dieter Jahn, Heinz Eckhardt | 1986-12-16 |
| 4626544 | Azole compounds and fungicides containing these compounds | Guenter Schulz, Hubert Sauter, Eberhard Ammermann | 1986-12-02 |
| 4566900 | Aniline derivatives and their use for controlling undesirable plant growth | Peter Plath, Ulrich Schirmer, Bruno Wuerzer, Guenter Retzlaff | 1986-01-28 |
| 4537986 | Preparation of pyrocatechol methylcarbamate | Siegfried Kersten, Walter Ditter, Peter Jacobs | 1985-08-27 |
| 4469884 | Preparation of n-methoxy-n-methylurethanes | Ulrich Schirmer | 1984-09-04 |
| 4316020 | Preparation of isatoic anhydrides | — | 1982-02-16 |
| 4310677 | Preparation of alkyl anthranilates | Dietrich Mangold | 1982-01-12 |
| 4297491 | Preparation of 2,3-dioxo-1,4-benzoxazine derivatives | Dietrich Mangold | 1981-10-27 |
| 4260562 | Preparation of O,N-disubstituted hydroxylamines | Friedrich Linhart, Bjoern Girgensohn, Eckhard Hickmann | 1981-04-07 |