Issued Patents All Time
Showing 26–46 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5945519 | Process for the preparation of sucrose fatty acid esters | Natvarlal B. Desai | 1999-08-31 |
| 5941812 | Storage-stable, concentrated surfactant composition based on alkylglucosides | Christian Weitemeyer | 1999-08-24 |
| 5910564 | Polyamino acid ester copolymers | Harald Rau, Jorg Simpelkamp, Christian Weitemeyer | 1999-06-08 |
| 5891977 | Organopolysiloxanes comprising polyhydroxyorganyl radicals and polyoxyalkylene radicals | Thomas Dietz, Peter Lersch, Christian Weitemeyer | 1999-04-06 |
| 5837831 | Method for separating alkyl glycosides | Siegfried Peter, Eckhard Weidner, Zhengfeng Zhang | 1998-11-17 |
| 5792737 | Mild, aqueous, surfactant preparation for cosmetic purposes and as detergent | Christian Weitemeyer | 1998-08-11 |
| 5645842 | Cosmetic or pharmaceutical preparations | Christian Weitemeyer | 1997-07-08 |
| 5646258 | Method of synthesizing alkyl glucosides | Siegfried Peter, Manfred Recksik, Eckhard Weidner, Zhengfeng Zhang | 1997-07-08 |
| 5491245 | Method for the synthesis of amphoteric surfactants | Christian Weitemeyer | 1996-02-13 |
| 5470992 | Method for the synthesis of betaines containing.ltoreq.10 ppm of organically bound chlorine | Willi Foitzik, Christian Weitemeyer, Hans-Dieter Kaseborn | 1995-11-28 |
| 5391321 | Liquid or pasty, storage-stable multiple emulsions of the O.sup.1 /W/O.sup. 2 | Peter Hameyer, Christian Weitemeyer | 1995-02-21 |
| 5354906 | Aqueous liquid solution of a betaine with a solids content of at least 40% by weight | Christian Weitemeyer, Willi Foitzik, Hans-Dieter Kaseborn, Uwe Begoihn | 1994-10-11 |
| 5243072 | Betaine group-containing polysaccharides with recurring anhydroglucose units, their synthesis and their use in cosmetic preparations | Klaus Hoffmann, Gotz Koerner, Hans-Joachim Kollmeier | 1993-09-07 |
| 5124446 | Betaine group-containing polysaccharides with recurring anhydroglucose units, their synthesis and their use in cosmetic preparations | Klaus Hoffmann, Gotz Koerner, Hans-Joachim Kollmeier | 1992-06-23 |
| 5023246 | Betaine group-containing derivatives of carboxymethylcellulose, their synthesis and their use in cosmetic preparations | Klaus Hoffmann, Gotz Koerner, Hans-Joachim Kollmeier | 1991-06-11 |
| 4988806 | Nitrogen-containing derivatives of carboxymethylcellulose, their synthesis and their use in cosmetic preparations | Klaus Hoffmann, Gotz Koerner, Hans-Joachim Kollmeier | 1991-01-29 |
| 4931362 | Microcapsule and micromatrix bodies and method for their formation | Wilhelm Zsifkovits, Hans-Joachim Kollmeier, Dietmar Schaefer, Christian Weitemeyer | 1990-06-05 |
| 4895917 | Organopolysiloxanes with Bunte salt groups | — | 1990-01-23 |
| 4844980 | Silica or silicic acid particles whose surface located hydroxyl groups are at least partially replaced by organic groups | Ulrich Holtschmidt, Gotz Koerner, Gerd Rossmy | 1989-07-04 |
| 4715986 | Particles, modified at their surface by hydrophilic and hydrophobic groups | Ulrich Holtschmidt, Goetz Koerner, Gerd Rossmy | 1987-12-29 |
| 4537595 | Organopolysiloxanes with Bunte salt groups, their synthesis and use for the surface treatment of inorganic or organic materials | Ulrich Holtschmidt, Gotz Koerner | 1985-08-27 |