Issued Patents All Time
Showing 25 most recent of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6258281 | Breaking down aromatic compounds in industrial wastewaters | Edmund Niedbalski, Laurance R. Thurman, Irene Troetsch-Schaller, Dieter Voges, Peter Zehner +2 more | 2001-07-10 |
| 6245242 | Cleanup of nitroaromatics-containing wastewaters | Hanns-Helge Stechl, Dietrich Wolff | 2001-06-12 |
| 5919887 | Decoloration of polyisocyanates containing isocyanurate and diretdione groups | Hermann Graf, Ernst Deuker, Stefan Wolff, Serge Wack, Richard Hardt | 1999-07-06 |
| 5616817 | Preparation of 1,2-propanediol | Manfred Eggersdorfer | 1997-04-01 |
| 5614646 | Selective hydrogenation of aromatic groups in the presence of epoxy groups | Thomas Wettling, Jochem Henkelmann | 1997-03-25 |
| 5530147 | Selective hydrogenation of aromatic groups in the presence of epoxy groups | Thomas Wettling, Jochem Henkelmann | 1996-06-25 |
| 5340916 | Polyoxypropylene-polyols and polyoxypropylene-polyoxyethylene-polyols containing hydroxyl groups | Rolf Henn, Werner Hinz, Klaus Vorspohl | 1994-08-23 |
| 5254597 | Production of chlorofluorocarbon-free, urethane-containing moldings having a cellular core and a compacted peripheral zone | Peter Horn, Ulrich Mueller, Wolfgang Hoelderich, Rudolf Taddey, Dieter Tintelnot | 1993-10-19 |
| 5248496 | Method of obtaining ruthenium tetroxide by oxidation of an aqueous alkali metal ruthenate solution | Dieter Voges | 1993-09-28 |
| 5233078 | Preparation of dialkyl malonates | Klaus Halbritter | 1993-08-03 |
| 5210335 | Preparation of lower polyhydric alcohols | Walter Himmele | 1993-05-11 |
| 5192813 | Preparation of hard foams containing urethane groups or urethane and isocyanurate groups by polyisocyanate polyaddition, and polyoxyalkylene-polyols which are suitable therefor | Rolf Henn, Werner Hinz, Klaus Vorspohl | 1993-03-09 |
| 5166443 | Preparation of 2,2-disubstituted pentane-1,5-diamines | Franz Merger, Claus-Ulrich Priester, Tom Witzel, Gerhard Koppenhoefer | 1992-11-24 |
| 5136051 | Preparation of 2-pyrrolidinones | Ulrich Koehler | 1992-08-04 |
| 5107018 | Process for the preparation of lower polyhydric alcohols | — | 1992-04-21 |
| 5101044 | Preparation of N-substituted pyrrolidin-2-ones | Ulrich Koehler | 1992-03-31 |
| 5066673 | Substituted benzyl 2-phenyl-1-alk(en)ylcyclopropane-carboxylates and the use thereof for controlling pests | Winfried Zombik, Hans Theobald, Bernd Wolf, Peter Hofmeister, Christoph Kuenast | 1991-11-19 |
| 5064908 | Oxidized polyethylene and use as lubricant for polyvinylchloride | Albert Hettche, Werner Liedy, Stefan Weiss, Leo Ehemann | 1991-11-12 |
| 4956341 | 3-tert-butyl-40-methoxycyclohexylmethanol, its preparation and its use as a scent | Dieter Degner, Walter Gramlich | 1990-09-11 |
| 4889897 | Oxidation of polyethylene | Albert Hettche, Werner Liedy, Stefan Weiss, Leo Ehemann | 1989-12-26 |
| 4847425 | Prepartion of 4-isopropylcyclohexylmethanol and its alkyl ethers | Dieter Degner, Walter Gramlich, Wolfgang Lengsfeld | 1989-07-11 |
| 4847394 | Preparation of 2,2-di-[lycidyloxycyclohexyl]-propane | — | 1989-07-11 |
| 4822889 | Triazolyl alcohols, their preparation and their use as fungicides | Hubert Sauter, Ernst-Heinrich Pommer, Eberhard Ammermann | 1989-04-18 |
| 4757051 | 2-tert-butyl-4-methylcyclohexanol derivatives, their preparation and their use as scents | Walter Gramlich, Werner Hoffman | 1988-07-12 |
| 4751214 | Use of 2-tert-butyl-4-methylcyclohexanol as a scent and as a component of scent compositions | Walter Gramlich, Werner Hoffmann, Klaas Jansen, Wolfgang Lengsfeld | 1988-06-14 |