Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7226527 | Method for recovering crude 1,3-butadiene by extractive distillation from a C4 cut | Klaus Kindler, Melanie Pahl, Gerd Kaibel | 2007-06-05 | $867,000 |
| 7132038 | Method and device for obtaining 1,3 pure butadiene from 1,3 raw butadiene by distillation | Klaus Kindler, Melanie Pahl, Gerd Kaibel | 2006-11-07 | $595,000 |
| 6870014 | Catalyst and method for producing polytetrahydrofurane | Ulrich Steinbrenner, Thomas Narbeshuber, Martin Haubner, Christoph Sigwart, Gerd Linden +6 more | 2005-03-22 | $433,000 |
| 6716937 | Method for the single-step production of polytetrahydrofuran and tetrahydrofuran copolymers | Thomas Domschke, Rolf Fischer, Martin Haubner, Christoph Sigwart, Ulrich Steinbrenner +1 more | 2004-04-06 | $303,000 |
| 5356460 | Removal of methacrolein from a gaseous mixture | Herbert Vogel, Herbert Exner | 1994-10-18 |