Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5243072 | Betaine group-containing polysaccharides with recurring anhydroglucose units, their synthesis and their use in cosmetic preparations | Burghard Gruning, Klaus Hoffmann, Gotz Koerner | 1993-09-07 |
| 5130344 | Use of polysiloxane polyoxyalkylene block copolymers for the preparation of rigid polyurethane foams | Rolf-Dieter Langenhagen, Helmut Schator, Christian Weitemeyer | 1992-07-14 |
| 5124446 | Betaine group-containing polysaccharides with recurring anhydroglucose units, their synthesis and their use in cosmetic preparations | Burghard Gruning, Klaus Hoffmann, Gotz Koerner | 1992-06-23 |
| 5079270 | Method for the preparation of molded polyurethane and polyurea articles | Georg Burkhart, Helmut Lammerting | 1992-01-07 |
| 5064870 | Method for the production of highly elastic, cold-curing polyurethane foams | Georg Burkhart, Rolf-Dieter Langenhagen, Helmut Lammerting, Bernd-Jurgen Klietsch | 1991-11-12 |
| 5043409 | Release agent and process for the preparation of molded polyurethane or polyurea articles in the presence of the release agent | Helmut Lammerting, Rolf-Dieter Langenhagen | 1991-08-27 |
| 5023246 | Betaine group-containing derivatives of carboxymethylcellulose, their synthesis and their use in cosmetic preparations | Burghard Gruning, Klaus Hoffmann, Gotz Koerner | 1991-06-11 |
| 4988806 | Nitrogen-containing derivatives of carboxymethylcellulose, their synthesis and their use in cosmetic preparations | Burghard Gruning, Klaus Hoffmann, Gotz Koerner | 1991-01-29 |
| 4983750 | Phosphobetaines, methods for their synthesis and their use especially for industrial purposes | Joachim Giersberg | 1991-01-08 |
| 4931362 | Microcapsule and micromatrix bodies and method for their formation | Wilhelm Zsifkovits, Burghard Gruning, Dietmar Schaefer, Christian Weitemeyer | 1990-06-05 |
| 4772698 | Siloxanes containing tertiary amino groups | Helmut Lammerting | 1988-09-20 |
| 4728690 | Process for producing molded polyurethane parts | Helmut Lammerting | 1988-03-01 |
| 4698178 | Use of polyoxyalkylene-polysiloxane copolymers with silicon-linked, long-chain alkyl radicals as emulsifiers for the preparation of water/oil emulsions | Rudolf Huttinger, Rolf-Dieter Langenhagen, Alfred Walter, Wilhelm Wolfes | 1987-10-06 |
| 4692292 | Process for the manufacture of molded objects | Helmut Lammerting | 1987-09-08 |
| 4687786 | Process for the preparation of flexible polyurethane foams | Rolf-Dieter Langenhagen | 1987-08-18 |
| 4654161 | Siloxanes with betaine groups, their synthesis and use in cosmetic preparations | Rolf-Dieter Langenhagen, Klaus Hoffmann | 1987-03-31 |
| 4609750 | Siloxanes with betaine groups, their synthesis and use in hair care products | Rolf-Dieter Langenhagen, Klaus Hoffmann | 1986-09-02 |
| 4588755 | Process for the preparation of flexible polyester urethane foams | Hans-Heinrich Schloens | 1986-05-13 |
| 4529743 | Process for the production of rigid polyurethane foams | Rolf-Dieter Langenhagen | 1985-07-16 |
| 4478957 | Process for the production of highly resilient, cold-curing polyurethane foams | Bernd-Juergen Klietsch, Helmut Lammerting, Rolf-Dieter Langenhagen | 1984-10-23 |
| 4417068 | Process for the addition of organic silicon compounds with SiH groups to compounds with olefinic double bonds | Rolf-Dieter Langenhagen | 1983-11-22 |
| 4267078 | Process for easily degrading waste consisting of the reaction products of organic compounds containing isocyanate groups with alcohols and/or water | Werner A. Lidy, Gerd Rossmy | 1981-05-12 |
| 4211849 | Process of producing cross-linked urethane-group comprising foams of open-cell structure | Gerd Rossmy | 1980-07-08 |