Issued Patents All Time
Showing 1–25 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6489498 | Silanes with hydrophilic groups, their synthesis and use as surfactants in aqueous media | Klaus-Dieter Klein, Wilfried Knott, Manfred Krakenberg | 2002-12-03 |
| 6255511 | Silanes with hydrophilic groups, their synthesis and use as surfactants in aqueous media | Klaus-Dieter Klein, Wilfried Knott, Manfred Krakenberg | 2001-07-03 |
| 5455367 | Method for the synthesis of silanes or organosilicon hydrides by the reduction of the corresponding silicon halides or organosilicon halides | Klaus-Dieter Klein, Wilfried Knott | 1995-10-03 |
| 5447981 | (meth) acrylic acid polymer dispersion | Jurgen Fock, Karl-Heinz Reichert, Stephan Fengler, Roland Smolin | 1995-09-05 |
| 5430166 | Silanes with hydrophilic groups, their synthesis and use as surfactants in aqueous media | Klaus-Dieter Klein, Wilfried Knott | 1995-07-04 |
| 5430167 | Silanes with hydrophilic groups, their synthesis and use as surfactants in aqueous media | Klaus-Dieter Klein, Wilfried Knott | 1995-07-04 |
| 5344949 | Method for the synthesis of surface-active anion-cation complexes | Klaus-Dieter Klein, Dietmar Schaefer | 1994-09-06 |
| 5296573 | Polyacrylate ester with long-chain alkoxylated hydrocarbonoxy groups and their use in cosmetics and personal grooming | Eberhard Esselborn, Jurgen Fock, Dietmar Schaefer | 1994-03-22 |
| 5243072 | Betaine group-containing polysaccharides with recurring anhydroglucose units, their synthesis and their use in cosmetic preparations | Burghard Gruning, Klaus Hoffmann, Hans-Joachim Kollmeier | 1993-09-07 |
| 5198207 | Method for the preparation of active magnesium hydride-magnesium hydrogen storage systems, which reversibly absorb hydrogen | Wilfried Knott, Klaus-Dieter Klein | 1993-03-30 |
| 5124446 | Betaine group-containing polysaccharides with recurring anhydroglucose units, their synthesis and their use in cosmetic preparations | Burghard Gruning, Klaus Hoffmann, Hans-Joachim Kollmeier | 1992-06-23 |
| 5093101 | Method for the preparation of active magnesium hydride-magnesium-hydrogen storage systems and apparatus for carrying out the method | Wilfried Knott, Klaus-Dieter Klein | 1992-03-03 |
| 5091002 | Preparation for the water-repellent impregnation of porous mineral building materials | Eckehard Schamberg, Herwig Fritsch, Manfred Grasse, Roland Sucker | 1992-02-25 |
| 5023246 | Betaine group-containing derivatives of carboxymethylcellulose, their synthesis and their use in cosmetic preparations | Burghard Gruning, Klaus Hoffmann, Hans-Joachim Kollmeier | 1991-06-11 |
| 5004559 | Polyoxyalkylene-polysiloxane block copolymers as demulsifiers for water-containing oil | Dietmar Schaefer | 1991-04-02 |
| 4988806 | Nitrogen-containing derivatives of carboxymethylcellulose, their synthesis and their use in cosmetic preparations | Burghard Gruning, Klaus Hoffmann, Hans-Joachim Kollmeier | 1991-01-29 |
| 4894175 | Crude oil with a depressed pour point | Dietmar Schaefer, Roland Berger, Hans-Ferdi Fink, Heinz Dumm | 1990-01-16 |
| 4844980 | Silica or silicic acid particles whose surface located hydroxyl groups are at least partially replaced by organic groups | Burghard Gruning, Ulrich Holtschmidt, Gerd Rossmy | 1989-07-04 |
| 4824983 | New fluorine-containing siloxanes, their synthesis and use as defoaming agent | Hans-Ferdi Fink, Roland Berger, Christian Weitemeyer | 1989-04-25 |
| 4816541 | Method for the preparation of SiH-containing organopolysiloxanes | Christian Weitemeyer, Dietmar Wewers | 1989-03-28 |
| 4781950 | Method for impregnating mineral building materials | Herbert Giesing, Eckehard Schamberg, Jakob Wassermeyer, Christian Weitemeyer | 1988-11-01 |
| 4749764 | Process for the preparation of heat-curable silicone | Vaclav Kropac | 1988-06-07 |
| 4626378 | Use of fluorinated norbornylsiloxanes for defoaming freshly extracted degassing crude oil | Roland Berger, Hans-Ferdi Fink, Jaroslav Langner, Christian Weitemeyer | 1986-12-02 |
| 4621521 | Apparatus for determining foam formation of crude petroleum | Horst Lattek, Hans-Ferdi Fink | 1986-11-11 |
| 4609752 | Process and apparatus for continuously synthesizing alkoxypolysiloxanes | Herbert Giesing, Vaclay Kropac, Hans-Jurgen Patzke, Herbert Quilitsch, Harald Rau +3 more | 1986-09-02 |