Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4976742 | META-aminophenols useful as oxidation hair dye couplers | David Rose, Edgar Lieske | 1990-12-11 |
| 4900327 | Preparations containing substantive nitrodiphenylamine derivative hair dyes | David Rose, Edgar Lieske | 1990-02-13 |
| 4900325 | Hair-dyeing preparations | David Rose, Edgar Lieske, Horst Hoeffkes | 1990-02-13 |
| 4859206 | Hair dye preparations containing nitrodiphenylamine derivative | David Rose, Edgar Lieske, Horst Hoeffkes | 1989-08-22 |
| 4842612 | Aminophenyl alkylenediamines useful in oxidation hair dyes | David Rose, Edgar Lieske | 1989-06-27 |
| 4838893 | Oxidation hair dyes comprising substituted dihydroxypyridines as coupling components | David Rose, Edgar Lieske | 1989-06-13 |
| 4832697 | Hair dye preparations containing substantive nitrodiphenylamine derivatives | David Rose, Edgar Lieske | 1989-05-23 |
| 4784667 | Oxidation hair dyes comprising diamino-substituted pyridines and amino-substituted aromatics as precursors | Peter Flemming, Dieter Schrader | 1988-11-15 |
| 4756715 | Hair-dyeing preparations containing substantive nitrodiphenylamine derivatives | David Rose, Edgar Lieske | 1988-07-12 |
| 4756716 | Preparations containing substantive nitrodiphenylamine derivative hair dyes | David Rose, Edgar Lieske | 1988-07-12 |
| 4745652 | New tetra-aminopyrimidine derivatives and their use in hair-dyeing preparations | David Rose, Edgar Lieske | 1988-05-24 |
| 4698066 | Amine oxidation dye hair treating compositions | David Rose, Edgar Lieske | 1987-10-06 |
| 4685931 | Acrylate dispersion and its use for thickening hydrogen peroxide preparations | Ludwig Schieferstein, Detlef Hollenberg | 1987-08-11 |
| 4684371 | Oxidation hair dyes comprising m-phenylenediamine derivatives as coupling components | Gunther Konrad, Edgar Lieske | 1987-08-04 |
| 4619666 | Hair dyes containing amino-nitrobenzoic acid or amino-nitrobenzene sulfonic acids as substantive dyes | David Rose, Edgar Lieske | 1986-10-28 |
| 4552565 | Hair dyes: diresorcyl sulphide, sulphoxide or sulphone coupling agents | Edgar Lieske | 1985-11-12 |
| 4541869 | Process for forming foundry components | Wolfgang Friedemann, Hans Fehr, Kurt Feulner | 1985-09-17 |
| 4487607 | Oxidation hair dyes containing 5-halo-2,3-pyridine-diols as coupler components | David Rose | 1984-12-11 |
| 4402699 | Coupler components for the oxidation of hair dyes and their use, as well as hair dyeing agents containing them | David Rose | 1983-09-06 |
| 4371370 | Oxidation hair dyes comprising bis-(2,4-diaminophenoxy)-alkanols as coupling components | David Rose, Hinrich Moller | 1983-02-01 |
| 4341559 | Binders based upon solutions of alkali metal silicates | Wolfgang Friedemann, Kurt Feulner | 1982-07-27 |