Issued Patents All Time
Showing 1–25 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5587174 | Cosmetic composition for treating skin and hair containing apple wax and methods of making them | G unther Lang, Dieter Hoch, Wolfram Geibel, Harald Wendel, Thomas Kripp | 1996-12-24 |
| 5145482 | Hair dye compositions based on 2,5-diamino-6-nitropyridine derivatives | Thomas Clausen | 1992-09-08 |
| 5037446 | 2-nitroaniline derivatives and hair dyeing compositions containing same | Thomas Clausen, Hans-Jurgen Braun, Herbert Mager | 1991-08-06 |
| 5030241 | Use of 2,6-dinitro-aniline derivatives in hair dyes and new 2,6-dinitro-aniline derivatives | Thomas Clausen | 1991-07-09 |
| 5021066 | Oxidative hair dye composition based on a gel vehicle and a process to dye hair | Johann Aeby, Herbert Mager | 1991-06-04 |
| 4971784 | Preserved hair-and body-cleaning agent and the use of a preservative combination | Hans Holzel, Horst Schwarz | 1990-11-20 |
| 4950302 | Process for the production of 2,5-diamino-6-nitro-pyridine derivatives, their use in hair dye compositions and new 2,5-diamino-6-nitropyridine derivatives | Thomas Clausen | 1990-08-21 |
| 4931271 | Cosmetic compostions based upon N-hydroxybutyl-chitosans, N-hydroxybutyl-chitosans as well as processes for the production thereof | Gunther Lang, Harald Wendel, Gerhard Maresch, Hans-Rudi Lenz | 1990-06-05 |
| 4921504 | 4-(N-ethyl-N-2-hydroxyethyl)-amino-1-(2 hydroxyethyl)-amino-2-nitrobenzene and compositions for dyeing hair containing the same | Thomas Clausen | 1990-05-01 |
| 4921949 | Process for making quaternary chitosan derivatives for cosmetic agents | Gunther Lang, Harald Wendel | 1990-05-01 |
| 4892728 | Pumpable cationic fatty alcohol despersion | Rolf Kawa, Holger Tesmann, Josef Wilhelm, Karl-Heinz Rose | 1990-01-09 |
| 4886516 | Diaminotetrafluoroethoxybenzenes, process for producing same and hair coloring agents containing same | Thomas Clausen | 1989-12-12 |
| 4883656 | Composition and method for the oxidative dyeing of hair | Herbert Mager, Axel Hoffmann | 1989-11-28 |
| 4854935 | 5-alkoxy-2,4-diamino-alkyl-benzenes and hairdye compositions based on 5-alkoxy-2,4-diamino-alkyl-benzenes | Thomas Clausen | 1989-08-08 |
| 4855130 | Hair treating compositions and processes for improving the condition of hair | Herbert Mager, Dietrich Hoch | 1989-08-08 |
| 4845204 | Cosmetic compositions on the basis of alkyl-hydroxypropyl-substituted chitosan derivatives, new chitosan derivatives and processes for the production thereof | Gunther Lang, Gerhard Maresch, Hans-Rudi Lenz, Lothar Breuer, Dietrich Hoch | 1989-07-04 |
| 4845294 | Diaminotetrafluoroethoxybenzenes | Thomas Clausen | 1989-07-04 |
| 4840639 | Agent for dyeing hair | Hans Husemeyer, Herbert Mager | 1989-06-20 |
| 4835266 | Cosmetic compositions based upon n-hydroxypropyl-chitosans, new n-hydroxypropyl-chitosans, as well as processes for the production thereof | Gunther Lang, Gerhard Maresch, Harald Wendel, Hans-Rudi Lenz, Jurgen Titze | 1989-05-30 |
| 4835314 | 2-nitroaniline derivatives | Thomas Clausen, Hans-Jurgen Braun, Herbert Mager | 1989-05-30 |
| 4822598 | Cosmetic agent on the basis of quaternary chitosan derivatives, novel quaternary chitosan derivatives as well as processes for making same | Gunther Lang, Harald Wendel | 1989-04-18 |
| 4797130 | Oxidative hair dye composition based on 4-amino-2-aminomethyl-phenols | Thomas Clausen | 1989-01-10 |
| 4780310 | Cosmetic compositions based upon N-hydroxypropyl-chitosans, new N-hyroxypropyl-chitosans, as well as processes for the production thereof | Guther Lang, Gerhard Maresch, Harald Wendel, Hans-Rudi Lenz, Jurgen Titze | 1988-10-25 |
| 4772690 | Quaternary hydroxyethyl-substituted chitosan derivatives, cosmetic compositions based thereon and processes for the production thereof | Gunther Lang, Harald Wendel | 1988-09-20 |
| 4772689 | Quaternary hydroxy-propyl-substituted chitosan derivatives, cosmetic compositions based thereon and processes for the production thereof | Gunther Lang, Harald Wendel | 1988-09-20 |