Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10519096 | Process for preparing amino compounds from nitrile compounds | Anne Rittsteiger, Stephan Kohlstruk, Dirk Hoppe, Alexander Martin Rüfer, Sabrina Sowka +5 more | 2019-12-31 |
| 10392340 | Purification of crude isophoronediamine by partial condensation in series with total condensation | Anne Rittsteiger, Jan Caßens, Cord Knoop, Anja Müller, Alexander Martin Rüfer | 2019-08-27 |
| 10343975 | Coupling of distillative purification with a partial condenser for pre-purification of isophoronediamine | Anne Rittsteiger, Alexander Martin Rüfer, Guido Streukens, Stephan Kohlstruk, Matthias Orschel +3 more | 2019-07-09 |
| 9878979 | Fine purification of isophoronenitrile by melt crystallization | Joerg-Joachim Nitz, Stephan Kohlstruk, Robert Jansen, Anja Mueller, Jan Cassens | 2018-01-30 |
| 9868699 | Process for removing cations from an isophoronenitrile product mixture | Joerg-Joachim Nitz, Stephan Kohlstruk, Robert Jansen, Andreas Merkel, Anja Mueller +1 more | 2018-01-16 |
| 9085506 | Process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine | Markus Galle, Gerda Grund, Michael D Hinton, Rolf-Burkhard Hirsch, Robert Jansen +11 more | 2015-07-21 |
| 9035102 | Hydrolysis of the residues obtained in the production of isophorone to recover isophorone and acetone | Joerg-Joachim Nitz, Stephan Kohlstruk, Robert Jansen, Matthias Orschel, Andreas Merkel +5 more | 2015-05-19 |
| 8895683 | Superabsorbent polymers and methods of making the same | Franz-Felix Kuppinger, Guido Stochniol, Gunther Bub, Jurgen Mosler, Andreas Sabbagh | 2014-11-25 |
| 8889914 | Method for producing isophorone | Matthias Orschel, Robert Jansen, Martin Maier, Gerda Grund, Markus Schwarz +1 more | 2014-11-18 |
| 8481784 | Superabsorbent polymers and methods of making the same | Franz-Felix Kuppinger, Guido Stochniol, Gunther Bub, Jurgen Mosler, Andreas Sabbagh | 2013-07-09 |
| 8399658 | Method for isolation of laurolactam from a laurolactam synthesis process stream | Ralf Meier, Daniel Demicoli, Martin Roos, Bernd Guenzel, Frank Huebner | 2013-03-19 |
| 8362299 | Method for producing and purifying aqueous phases | Franz-Felix Kuppinger, Jorg Leistner, Jurgen Mosler, Peter Jansens | 2013-01-29 |
| 8293941 | Superabsorbent polymers and methods of making the same | Franz-Felix Kuppinger, Guido Stochniol, Gunther Bub, Jurgen Mosler, Andreas Sabbagh | 2012-10-23 |
| 8252120 | Washing apparatus, a method of purifying a wash material and use of the washing apparatus | Stefan Nordhoff, Torsten Balduf, Joachim Deinken, Joachim Pohlisch | 2012-08-28 |
| 8198481 | Process for preparing acrylic acid purified by crystallization from hydroxypropionic acid and apparatus therefore | Franz-Felix Kuppinger, Guido Stochniol, Gunther Bub, Jurgen Mosler, Andreas Sabbagh | 2012-06-12 |
| 7807826 | Purification of a crude lactam mixture by means of melt crystallization | Ralf Meier, Bernd Gunzel, Martin Roos, Stephan Schäflein, Bernd-Holger Modrow | 2010-10-05 |