Issued Patents All Time
Showing 25 most recent of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10543674 | Device for treating substrates | Gunar Bormann, Johannes Naumann | 2020-01-28 |
| 10442103 | Device and method for processing substrates | Gunar Bormann, Johannes Naumann, Jörg Reber, Kay Klawitter | 2019-10-15 |
| 7179875 | Method for producing water-absorbent resins | Hans Martan, Gerhard Nestler, Klaus Joachim Mueller-Engel | 2007-02-20 |
| 7157598 | Method for producing an aqueous alkali acrylate solution | Hans Martan, Klaus Joachim Mueller-Engel | 2007-01-02 |
| 6683177 | Process for producing caprolactam | Johann-Peter Melder, Werner Schnurr, Rolf Fischer | 2004-01-27 |
| 6683179 | Preparation of caprolactam | Peter Bassler, Dieter Baumann, Rolf Fischer, Johann-Peter Melder, Frank Ohlbach | 2004-01-27 |
| 6677449 | Preparation of caprolactam | Peter Bassler, Dieter Baumann, Rolf Fischer, Johann-Peter Melder, Frank Ohlbach | 2004-01-13 |
| 6663844 | Pyrogenic titanium dioxide | Klemens Flick | 2003-12-16 |
| 6657036 | Polycondensation resins and polyaddition resins produced by heterogeneous catalysis | Werner-Alfons Jung, Heinz-Peter Rink, Wolfgang Straehle | 2003-12-02 |
| 6353085 | Method for producing polyamides | Ralf Mohrschladt, Volker Hildebrandt, Gunter Pipper | 2002-03-05 |
| 6316588 | Continuous preparation of polyamides from aminonitriles | Ralf Mohrschladt, Volker Hildebrandt | 2001-11-13 |
| 6222033 | Method for producing cyclic lactams | Rolf Fischer | 2001-04-24 |
| 6218535 | Caprolactam production process | Klemens Flick | 2001-04-17 |
| 6198002 | Preparation of secondary and tertiary 2-methyl-1, 5-pentanediamines | Karsten Eller, Bernd Fiege, Stefan Rittinger | 2001-03-06 |
| 6153748 | Method for hydrogenating compounds from the group of imines or enamines | Frank Ohlbach | 2000-11-28 |
| 6147208 | Process for simultaneously preparing caprolactam and hexamethylene diamine | Gunther Achhammer, Peter Bassler, Rolf Fischer, Hermann Luyken, Werner Schnurr +2 more | 2000-11-14 |
| 6002010 | Carboxylic acid derivative preparation process | — | 1999-12-14 |
| 5952493 | Method of purifying .epsilon.-caprolactam | — | 1999-09-14 |
| 5894074 | Preparation of tertiary amines from nitriles and secondary amines | Boris Breitscheidel, Rainer Becker, Horst Neuhauser | 1999-04-13 |
| 5874575 | Preparation of caprolactam | Guenther Achhammer | 1999-02-23 |
| 5840904 | Fluoro-pyridine-2,3-dicarboxylic anhydrides which are intermediates for herbicidal pyridine-2,3-dicarboximides | Gerhard Hamprecht, Matthias Gerber, Helmut Walter, Karl-Otto Westphalen | 1998-11-24 |
| 5840981 | Process for producing N-methyl-2(3,4 dimethoxyphenyl)-ethylamine | Horst Zimmermann, Tom Witzel, Boris Breitscheidel, Rainer Becker, Horst Nauhauser | 1998-11-24 |
| 5739324 | Preparation of caprolactam | Tom Witzel | 1998-04-14 |
| 5717090 | Simultaneous preparation of caprolactam and hexamethylenediamine | Peter Bassler, Hermann Luyken, Gunther Achhammer, Tom Witzel, Rolf Fischer +1 more | 1998-02-10 |
| 5693793 | Preparation of caprolactam from 6-aminocapronitrile | Josef Ritz, Guido Voit, Gunther Achhammer, Rolf Fischer | 1997-12-02 |