Issued Patents All Time
Showing 25 most recent of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6827858 | Method for separating alkali metal ions from alkoxylates | Joachim Bader, Hans-Heinrich Bechtolsheimer, Armin Brucker, Gabriele Iffland, Hans-Joachim Klink +3 more | 2004-12-07 |
| 6624333 | Method for producing bisphenol alcoxylates | Stefan Koser, Klaus Mundinger, Wolfgang Kasel, Arend Jouke Kingma | 2003-09-23 |
| 6329558 | Method for producing alkylene glycol with a low carbonyl compound content | Jurgen Mohr | 2001-12-11 |
| 6265592 | Method for the continuous production of 1,3-dioxolan-2-ones | Stefan Birnbach, Jurgen Mohr, Regina Benfer, Walter Bieg, Jarren Peters +3 more | 2001-07-24 |
| 6235940 | Method for producing oxalkylated amines or alcohols | Juergen Mohr | 2001-05-22 |
| 6207022 | Purification of crude (meth) acrylic acid | Gerhard Nestler, Holger Herbst, Helmut Lermer, Hans Martan, Herbert Vogel +1 more | 2001-03-27 |
| 6072076 | Continuous preparation of alkyl esters of (meth)acrylic acid | Willi Schmidt, Matthias Geisendorfer, Alexander Weck, Holger Herbst, Gerhard Nestler | 2000-06-06 |
| 5914427 | Preparation of .omega.-hydroxyesiers of .alpha.,.beta.-unsaturated carboxylic acids | Gerhard Nestler | 1999-06-22 |
| 5900125 | Continuous preparation of alkyl esters of (meth)acrylic acid and apparatus for this purpose | Herbert Exner, Karl Baur, Christiane Potthoff, Albrecht Dams | 1999-05-04 |
| 5883288 | Continuous preparation of alkyl esters of (meth)acrylic acid | Gabriele Iffland, Albrecht Dams, Alexander Weck, Heinrich Aichinger, Holger Herbst +4 more | 1999-03-16 |
| 5877326 | Aqueous phase process for preparing N-substituted imidazoles | Gisela HIEBER, Klaus Ebel, Jürgen Schröder, Carsten Groning, Bernd Ruge | 1999-03-02 |
| 5817865 | Preparation of acrylic acid and esters | Otto Machhammer, Gerd-Jurgen Engert, Theo Proll | 1998-10-06 |
| 5811574 | Continuous preparation of alkyl esters of (meth)acrylic acid and apparatus for this purpose | Herbert Exner, Karl Baur, Christiane Potthoff, Albrecht Dams | 1998-09-22 |
| 5734074 | Continuous preparation of alkyl esters of (meth) acrylic acid | Herbert Exner, Karl Baur, Christiane Potthoff | 1998-03-31 |
| 5663421 | Separation of a diester of (meth)acrylic acid with a C.sub.4 -C.sub.6 -alkanediol | Helmut Lermer, Ulrich Rauh, Gerhard Nestler | 1997-09-02 |
| 5637760 | Preparation of 1,4-butanediol mono(meth)acrylate by esterification of (meth)acrylic acid with 1,4-butanediol, in which an aqueous solution of unconverted 1,4-butanediol is obtained | Helmut Lermer, Klaus Bittins, Gerhard Nestler, Gundo Brauch | 1997-06-10 |
| 5618971 | Separation of a mono(meth)acrylate of a C.sub.4 -C.sub.6 alkanediol from an aqueous solution containing a mono(methacrylate) of a C.sub.4 -C.sub.6 alkanediol and the said C.sub.4 -C.sub.6 alkanediol | Helmut Lermer, Ulrich Rauh, Gerhard Nestler | 1997-04-08 |
| 5468871 | Preparation of N-substituted pyrazoles | Klaus Ebel, Juergen Schroeder, Carsten Groening, Hans Rupert Merkle | 1995-11-21 |
| 5232605 | Breakdown of waste waters containing aromatic nitro compounds | Karl Baur, Ulrich Kanne, Thomas Papkalla | 1993-08-03 |
| 5117004 | Preparation of imidazole-2-carboxylic acids | Uwe Kempe, Hermann Koehler | 1992-05-26 |
| 5015785 | Preparation of mixtures of isomeric cresols with a molar ratio of para- to meta-cresol of at least 0.6:1 to 10:1 | Werner Steck, Helmut Lermer, Matthias Schwarzmann | 1991-05-14 |
| 5003089 | Preparation of cyclic 6-membered to 8-membered vinylene-1,2-dioxy compounds | Franz Merger, Juergen Frank, Wolfgang Hoelderich, Manfred Sauerwald | 1991-03-26 |
| 4973751 | Preparation of unsaturated compounds by elimination reaction | Eckhard Hickmann, Herbert Krug | 1990-11-27 |
| 4950763 | Preparation of ketones | Charles Schommer, Klaus Ebel, Matthias Irgang, Wolfgang Hoelderich, Harald Rust | 1990-08-21 |
| 4943671 | Reductive dehalogenation of organic halogen compounds | Manfred Sauerwald, Herbert Krug, Matthias Irgang | 1990-07-24 |