Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5972323 | Hydrolytically cleavable active ingredient derivative compounds, hair treatment compositions containing them and hair treatment methods | Rudolf Bimczok, Thomas Czigler, Thomas Kripp | 1999-10-26 |
| 5935562 | Permanent process and agent | Beate Dannecker, Helmut Keller, Ulrike Bohr | 1999-08-10 |
| 5879669 | Aqueous hair fixing composition containing a water-soluble hair fixing polymer and a thickener | Thomas Clausen, Wolfgang Keil, Michael Franzke, Jurgen Schmenger, Dieter Schonert | 1999-03-09 |
| 5690921 | Hair fixing composition in the form of an aqueous solution, foam or gel | Thomas Clausen | 1997-11-25 |
| 5635170 | Composition and method for permanent shaping of hair | Gerhard Maresch | 1997-06-03 |
| 5512276 | Composition for fixing hair based on lignin or lignin derivatives as well as dihydroxypropyl lignin | Thomas Clausen, Hans-Jugen Titze, Karin Steinbrecht, Wolfgang Keil | 1996-04-30 |
| 5424062 | Method for permanently shaping hair | Annette Schwan, Thomas Clausen | 1995-06-13 |
| 5298240 | Hair care composition in the form of a microemulsion | Friedel Schroder | 1994-03-29 |
| 5213792 | Storage-stable pearlescent hair-conditioning compositions | Karin Grundmann, Paul Gross | 1993-05-25 |
| 5100656 | Preserved hair and body treatment compositions and use of a preservative combination | Hans Holzel, Horst Schwarz | 1992-03-31 |
| 5037632 | Composition for the strengthening of the hairdo and the care of hair | Paul Gross, Hildegard Henze, Harald Wendel, Liane Stahle | 1991-08-06 |
| 4976952 | Macromolecular, surface-active, quaternary, N-substituted chitosan derivatives as well as cosmetic composition based on these new chitosan derivatives | Harald Wendel | 1990-12-11 |
| 4975093 | Hair dyeing compositions containing 2,6-dinitro-phenol-derivatives | Thomas Clausen, Wolfgang Balzer | 1990-12-04 |
| 4954619 | O-benzyl-N-hydroxyalkyl derivatives of chitosan and nail polish containing the same | Gerhard Maresch, Hans-Rudi Lenz | 1990-09-04 |
| 4931271 | Cosmetic compostions based upon N-hydroxybutyl-chitosans, N-hydroxybutyl-chitosans as well as processes for the production thereof | Eugen Konrad, Harald Wendel, Gerhard Maresch, Hans-Rudi Lenz | 1990-06-05 |
| 4923977 | Cosmetic composition based upon N-hydroxypropylisopropylether chitosans as well as new N-hydroxypropylisopropylether derivatives of chitosan | Gerhard Maresch, Hans-Rudi Lenz | 1990-05-08 |
| 4921949 | Process for making quaternary chitosan derivatives for cosmetic agents | Harald Wendel, Eugen Konrad | 1990-05-01 |
| 4845204 | Cosmetic compositions on the basis of alkyl-hydroxypropyl-substituted chitosan derivatives, new chitosan derivatives and processes for the production thereof | Gerhard Maresch, Hans-Rudi Lenz, Eugen Konrad, Lothar Breuer, Dietrich Hoch | 1989-07-04 |
| 4835266 | Cosmetic compositions based upon n-hydroxypropyl-chitosans, new n-hydroxypropyl-chitosans, as well as processes for the production thereof | Gerhard Maresch, Harald Wendel, Eugen Konrad, Hans-Rudi Lenz, Jurgen Titze | 1989-05-30 |
| 4822598 | Cosmetic agent on the basis of quaternary chitosan derivatives, novel quaternary chitosan derivatives as well as processes for making same | Harald Wendel, Eugen Konrad | 1989-04-18 |
| 4777039 | Pearlescent hair conditioning composition | Paul Gross, Friedel Schroder, Karin Grundmann | 1988-10-11 |
| 4772690 | Quaternary hydroxyethyl-substituted chitosan derivatives, cosmetic compositions based thereon and processes for the production thereof | Harald Wendel, Eugen Konrad | 1988-09-20 |
| 4772689 | Quaternary hydroxy-propyl-substituted chitosan derivatives, cosmetic compositions based thereon and processes for the production thereof | Harald Wendel, Eugen Konrad | 1988-09-20 |
| 4532950 | Process for the permanent deformation of hair | Theodor Wajaroff | 1985-08-06 |
| 4528283 | Cosmetic composition based upon chitosan derivatives, new chitosan derivatives as well as processes for the production thereof | Harald Wendel, Eugen Konrad | 1985-07-09 |