Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6878170 | 5,6-Dihydroxyindolines as additives for hair dyeing preparations | Detlef Hollenberg, Mechthild Borgerding | 2005-04-12 |
| 6719811 | Oxidation colorants for keratin fibers | Guenther Konrad, Edgar Lieske | 2004-04-13 |
| 6569211 | 5,6-dihydroxyindolines as additives for hair dyeing preparations | Detlef Hollenberg, Mechthild Borgerding | 2003-05-27 |
| 6045779 | Skin and hair aerosol foam preparations containing an alkyl polyglycoside and vegetable oil | Reinhard Mueller, Kurt Seidel, Anke Kaczich, Detlef Hollenberg | 2000-04-04 |
| 5716418 | Coloring of keratin-containing fibers with preparations which contain alkyl glycosides and oxidation dye precursors | Horst Hoeffkes, Detlef Hollenberg, Reinhard Mueller, Manuela Ehlert, Christa Schramm | 1998-02-10 |
| 5685881 | Aromatic allylaminonitro compounds, hair dye compositions containing aromatic allylaminonitio compounds, and synthetic and natural fiber dyeing process | David Rose, Horst Hoeffkes, Edgar Lieske | 1997-11-11 |