Issued Patents All Time
Showing 1–25 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6939960 | Cellulose ethers | Erik-Andreas Klohr, Jörg Neubauer, Wolfgang Koch, Detmar Redeker, Wolfgang Wagenknecht +1 more | 2005-09-06 |
| 6559300 | Water-soluble biodegradable hydroxyalkyl cellulose-2-hydroxycarboxylic acid esters which can flocculate | Joachim Simon, Hanns P. Muller, Rainhard Koch, Volkhard Muller, Jurgen Engelhardt +1 more | 2003-05-06 |
| 6482940 | Cellulose ethers and method for producing the same | Erik-Andreas Klohr, Jörg Neubauer, Wolfgang Koch, Detmar Redeker, Wolfgang Wagenknecht +1 more | 2002-11-19 |
| 6146858 | Method for producing cellulose derivatives | Rainhardt Koch, Frank Berendes, John J. Foster, Hans-Georg Rast, Jurgen Engelhardt +2 more | 2000-11-14 |
| 5886095 | Process for the preparation of retention and dewatering agents based on polyamino-ethers | Roland Bayer, Wolfgang Koch | 1999-03-23 |
| 5808052 | Use of cellulose mixed ethers as additives for earth pressure shields | Werner Lange, Jorn-Bernd Pannek, Rene Kiesewetter | 1998-09-15 |
| 5639865 | Thermoplastic biodegradable polysaccharide derivatives, process for the manufacture thereof and use thereof | Jochen Kalbe, Hanns P. Muller, Rainhard Koch, Jurgen Engelhardt, Wolfgang Koch +1 more | 1997-06-17 |
| 5635569 | Superabsorbent polymers from cross-linked polyacrylonitrile emulsions | Gunter Sackmann, Siegfried Korte, Sergej Schapowalow, Wolfgang Koch | 1997-06-03 |
| 5614616 | Process for the production of polysaccharides | Hans-Josef Buysch, J orn Breckwoldt | 1997-03-25 |
| 5585471 | Method for preparing a mixture of .alpha.- and .beta.-chloroethyl-glucopyranose | Martin Lohrie, Wolfgang Koch, Reinhard Langer, Hans-Josef Buysch | 1996-12-17 |
| 5484903 | Process for the production of polysaccharide carbonates | Hans-Josef Buysch, Alexander Klausener | 1996-01-16 |
| 5466794 | Thermoplastic cellulose ether ester graft copolymers and process for their production | Jochen Kalbe, Hanns P. Muller, Rainhard Koch, Jurgen Engelhardt, Wolfgang Koch +1 more | 1995-11-14 |
| 5463034 | Polysaccharides, process for their preparation and their use | Hans-Josef Buysch, Alexander Klausener, Klaus Balser, Michaela Wilke | 1995-10-31 |
| 5463036 | Carboxymethylcellulose and its use in textile printing | Reinhard Kniewske, Rene Kiesewetter, Eugen Reinhardt | 1995-10-31 |
| 5455341 | Highly substituted carboxymethyl sulfoethyl cellulose ethers (CMSEC), a process for their production and their use in textile printing | Rene Kiesewetter, Reinhard Kniewske, Eugen Reinhardt | 1995-10-03 |
| 5446107 | Method for the preparation of cationic, water-soluble polymers and their use | Wolfgang Koch, Heinrich Leffers, Hans-Günter Poersch-Panke, Branislav Boehmer | 1995-08-29 |
| 5442054 | Highly substituted sulphoalkycellulose derivatives, especially sulphoethycellulose ether, a process for their preparation and their use as thickening agent for textile printing pastes | Rene Kiesewetter, Reinhard Kniewske, Eugen Reinhardt | 1995-08-15 |
| 5393845 | Process for the production of low molecular weight acrylonitrile polymers and their use | Siegfried Korte, Heinrich Alberts, Branislav Bohmer, Werner Karstens, Wolfgang Koch +1 more | 1995-02-28 |
| 5385585 | Use of anionic alkyl cellulose mixed ethers in textile printing | Rene Kiesewetter, Eugen Reinhardt, Reinhard Kniewske | 1995-01-31 |
| 5385607 | Water-soluble sulphoalkyl hydroxyalkyl derivatives of cellulose and their use in gypsum- and cement-containing compounds | Rene Kiesewetter, Werner Lange | 1995-01-31 |
| 5378826 | Process for the preparation of a storage stable low esterified nitrocellulose moistened with alcohol or water | Lutz Hoppe, Bernd Haase, Oke Brauer | 1995-01-03 |
| 5358561 | Use of water-soluble sulphoalkyl derivatives of cellulose in gypsum-and cement-containing compounds | Rene Kiesewetter, Werner Lange | 1994-10-25 |
| 5352730 | Coating system for materials which swell in water | Erhard Luhmann, Burkhard Kressdorf, Lutz Hoppe, Gunter Weber, Sebastian Meyer-Stork | 1994-10-04 |
| 5324776 | Process for the preparation of polymers containing amino groups | Hans-Josef Buysch | 1994-06-28 |
| 5324777 | Process for the production of polymers containing ammonium groups | Hans-Josef Buysch, Dieter Arlt | 1994-06-28 |