Issued Patents All Time
Showing 26–50 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4924000 | Preparation of acylated imidazoles | Michael Hesse, Wolfgang Hoelderich, Hermann Koehler | 1990-05-08 |
| 4900825 | Preparation of 4-nitro-5-imidazolyl ethers and thioethers | Hermann Koehler | 1990-02-13 |
| 4866183 | Preparation of hexaarylbisimidazoles | Uwe Kempe, Helmut Karn, Thomas Bluemel, Reinhold J. Leyrer, Thomas Loerzer | 1989-09-12 |
| 4864030 | Preparation of 1-alkylimidazoles | Hermann Koehler, Helmut Karn | 1989-09-05 |
| 4845247 | 3,4,-dihydro-2H-pyrans | Wolfgang Spiegler, Norbert Goetz, Manfred Sauerwald, Rolf Fischer | 1989-07-04 |
| 4824956 | Reductive dehalogenation of halogen compounds | Herbert Krug, Heinz Nohe | 1989-04-25 |
| 4822918 | Reduction of organic sulfur compounds | Manfred Sauerwald | 1989-04-18 |
| 4803283 | Preparation of 4(5)-nitroimidazole-5(4)-carboxylic acids | Uwe Kempe, Hermann Koehler | 1989-02-07 |
| 4767856 | Preparation of caprolactam from 6-aminocaproic acid, esters and amides | Manfred Sauerwald, Rolf Fischer, Hans-Martin Hutmacher, Claus-Ulrich Priester, Uwe Vagt | 1988-08-30 |
| 4727193 | Reduction of teritiary phosphine oxides, phosphine sulfides or phosphine dihalides with hydrocarbons | — | 1988-02-23 |
| 4672128 | Preparation of imidazole-4(5)-monocarboxylic acids and their salts or betaines | Uwe Kempe, Rolf Schlick | 1987-06-09 |
| 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, Wolfgang Rohr, Gernot Reissenweber | 1987-06-02 |
| 4658035 | Preparation of 2-alkyl-4,5-dihydroxymethylimidazoles | Uwe Kempe | 1987-04-14 |
| 4617395 | Preparation of quinolines | Helmut Hagen, Herbert Krug | 1986-10-14 |
| 4602927 | 4-alkylimidazole derivatives and their use as nitrification inhibitors | Ernst-Heinrich Pommer, Juergen Dressel | 1986-07-29 |
| 4599202 | Preparation of adipodinitrile | Manfred Sauerwald, Jost H. Manegold, Hans Leitner | 1986-07-08 |
| 4551528 | Carrying out organic condensation reactions at elevated temperatures by feeding the starting materials into the bottom of a reactor charged with mineral oil followed by product distillation | Herbert Krug | 1985-11-05 |
| 4550176 | Preparation of imidazole-4,5-dicarboxylic acid | Uwe Kempe, Anton Frank | 1985-10-29 |
| 4529537 | Liquid epoxy resin hardeners and processes for their preparation | Anton Frank | 1985-07-16 |
| 4481211 | Microbiocidal substituted benzylimidazolium salts | Ernst-Heinrich Pommer, Matthias Wetzler | 1984-11-06 |
| 4340745 | Preparation of 2-imidazolines | Uwe Kempe, Herbert Krug, Peter Magnussen, Werner Praetorius | 1982-07-20 |
| 4340744 | Preparation of imidazoles | Helmut Schwarz, Uwe Kempe, Herbert Krug, Werner Praetorius, Peter Magnussen +2 more | 1982-07-20 |
| 4339448 | Imidazole-copper complex compounds and fungicides containing them | Anton Frank, Ernst-Heinrich Pommer | 1982-07-13 |
| 4298748 | Preparation of 2-imidazolines | Uwe Kempe, Herbert Krug, Peter Magnussen, Werner Praetorius, Hans J. Szymanski | 1981-11-03 |
| 4278801 | Preparation of 5-hydroxymethylimidazoles | Uwe Kempe, Anton Frank, Helmut Karn | 1981-07-14 |