Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6207022 | Purification of crude (meth) acrylic acid | Toni Dockner, Gerhard Nestler, Holger Herbst, Hans Martan, Herbert Vogel +1 more | 2001-03-27 |
| 5663421 | Separation of a diester of (meth)acrylic acid with a C.sub.4 -C.sub.6 -alkanediol | Toni Dockner, 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 | Toni Dockner, 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 | Toni Dockner, Ulrich Rauh, Gerhard Nestler | 1997-04-08 |
| 5239120 | Preparation of 2-(3-aminopropyl)-cycloalkylamines | Franz Merger, Claus-Ulrich Priester, Gerhard Koppenhoefer, Wolfgang Harder, Tom Witzel +1 more | 1993-08-24 |
| 5118864 | Preparation of cyclopentenones | Franz Merger, Tom Witzel, Hans Horler | 1992-06-02 |
| 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, Matthias Schwarzmann, Toni Dockner | 1991-05-14 |
| 5002639 | Separation of ortho-, meta- and para-tolunitrile from ternary mixtures of the isomers | Werner Steck, Harald Rust, Fritz Naeumann | 1991-03-26 |
| 4980511 | Preparation of aldehydes and/or ketones BU conversion of epoxides | Wolfgang Hoelderich, Norbert Goetz, Leopold Hupfer | 1990-12-25 |
| 4967013 | Preparation of hydroxybenzaldehydes | Werner Steck, Harald Rust, Gerhard Fritz, Hardo Siegel | 1990-10-30 |
| 4939280 | Conversion of 1,3-dioxanes to 4-oxaaldehydes | Wolfgang Hoelderich, Franz Merger | 1990-07-03 |
| 4822920 | Preparation of cyclopentanone | Wolfgang Hoelderich, Matthias Schwarzmann | 1989-04-18 |