Issued Patents All Time
Showing 26–50 of 74 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6498272 | Method for producing acrylic acid | Jürgen Schröder, Klaus Joachim Müller-Engel | 2002-12-24 |
| 6458989 | Method for producing (meth)acrylic acid and (meth)acrylic acid esters | Heinrich Aichinger, Hans Martan | 2002-10-01 |
| 6455732 | Method for storing and/or transporting pure acrylic acid | Heinrich Aichinger, Klaus Joachim Müller-Engel, Jürgen Schröder | 2002-09-24 |
| 6395140 | Method for producing (meth)acrylic acid | Holger Herbst, Ulrich Hammon | 2002-05-28 |
| 6353130 | Method for continuous production of (meth)acrylic alkyl esters | Heinrich Aichinger, Holger Herbst, Jürgen Schröder | 2002-03-05 |
| 6320070 | Method for producing (meth) acrylic acid esters | Heinrich Aichinger, Michael Fried | 2001-11-20 |
| 6315012 | Device for feeding a fluid into a container | Michael Fried | 2001-11-13 |
| 6228227 | Separation of (meth)acrylic acid by rectification | Holger Herbst, Jerry Darlington, Ulrich Hammon | 2001-05-08 |
| H1957 | Immediate termination of free radical polymerizations | Michael Fried, Paul Leon Kageler, Lawrence E. James | 2001-04-03 |
| 6207022 | Purification of crude (meth) acrylic acid | Toni Dockner, Holger Herbst, Helmut Lermer, Hans Martan, Herbert Vogel +1 more | 2001-03-27 |
| 6187947 | Method for producing (meth)acrylic acid esters | Heinrich Aichinger, Michael Fried | 2001-02-13 |
| 6177590 | Method for the production of (meth)acrylic acid esters | Heinrich Aichinger, Michael Fried, Albrecht Dams | 2001-01-23 |
| 6072076 | Continuous preparation of alkyl esters of (meth)acrylic acid | Willi Schmidt, Matthias Geisendorfer, Alexander Weck, Toni Dockner, Holger Herbst | 2000-06-06 |
| 6063959 | Purification of crude acrylic acid by crystallization | Klaus Lehnert, Klaus Joachim Müller-Engel, Bernd Eck | 2000-05-16 |
| 5961790 | Separation of (meth) acrylic acid by rectification | Holger Herbst, Jerry Darlington, Ulrich Hammon | 1999-10-05 |
| 5945560 | Continuous preparation of alkyl esters of (meth) acrylic acid | Gabriele Iffland, Albrecht Dams, Alexander Weck, Heinrich Aichinger, Holger Herbst +1 more | 1999-08-31 |
| 5914427 | Preparation of .omega.-hydroxyesiers of .alpha.,.beta.-unsaturated carboxylic acids | Toni Dockner | 1999-06-22 |
| 5910603 | Esterification of (meth)acrylic acid with an alkanol | Heinrich Aichinger, Matthias Geisendorfer, Holger Herbst | 1999-06-08 |
| 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 |
| 5767306 | Esterification of (meth)acrylic acid with an alkanol | Heinrich Aichinger, Michael Fried | 1998-06-16 |
| 5663421 | Separation of a diester of (meth)acrylic acid with a C.sub.4 -C.sub.6 -alkanediol | Toni Dockner, Helmut Lermer, Ulrich Rauh | 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, Helmut Lermer, Klaus Bittins, Gundo Brauch | 1997-06-10 |
| 5637222 | Process for the fractional separation of (meth)acrylic acid from a mixture containing (meth)acrylic acid | Holger Herbst, Ulrich Hammon | 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, Helmut Lermer, Ulrich Rauh | 1997-04-08 |
| 5563178 | Expandable styrene polymers of high heat resistance | Rolf Henn, Siegmund Besecke, Andreas Deckers, Norbert Guentherberg, Martin Brudermueller +1 more | 1996-10-08 |