Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6228227 | Separation of (meth)acrylic acid by rectification | Holger Herbst, Gerhard Nestler, Ulrich Hammon | 2001-05-08 |
| 5961790 | Separation of (meth) acrylic acid by rectification | Holger Herbst, Gerhard Nestler, Ulrich Hammon | 1999-10-05 |
| 5482597 | Purification of crude (meth)acrylic acid | Holger Herbst, Gerhard Nestler, Hans Martan | 1996-01-09 |