Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12290584 | Hair dyeing method using natural dyes and metal salt | Lusine Sargsyan, Thomas Hippe, Volkmar Vill | 2025-05-06 |
| 12178897 | Oxidative dyeing agent for keratin fibers comprising novel dye precursor combinations | Razi Abbas, Tugce Cansev, Thomas Hippe, Astrid Kleen, Stefan Hoepfner +1 more | 2024-12-31 |
| 12109291 | Oxidative dyeing agent for keratin fibers comprising novel dye precursor combinations | Razi Abbas, Tugce Cansev, Thomas Hippe, Astrid Kleen, Stefan Hoepfner +1 more | 2024-10-08 |
| 12102704 | Oxidative dyeing agent for keratin fibers comprising novel dye precursor combinations | Razi Abbas, Tugce Cansev, Thomas Hippe, Astrid Kleen, Stefan Hoepfner +1 more | 2024-10-01 |
| 12097274 | Oxidative dyeing agent for keratin fibers comprising novel dye precursor combinations | Razi Abbas, Tugce Cansev, Thomas Hippe, Astrid Kleen, Stefan Hoepfner +1 more | 2024-09-24 |
| 11033472 | Hair-care agent and method for oxidative hair dying or bleaching with selected dicarboxylic acids | Thomas Hippe, Astrid Kleen-Fehres | 2021-06-15 |
| 10987291 | Gentle agents and methods for oxidative dyeing using selected dicarboxylic acids | Thomas Hippe, Astrid Kleen-Fehres | 2021-04-27 |
| 10918581 | Oxidation agent preparations | Camille Grosjacques, Sylvia Kerl, Susanne Hagenow, Astrid Kleen-Fehres | 2021-02-16 |
| 10869816 | Powder additive to reduce the damage of bleaching and colouring agents | Thomas Hippe, Marc Stucky, Stephanie A. Smith, Robert Schaeffler | 2020-12-22 |
| 10835471 | Method for dyeing keratin fibers | Camille Grosjacques, Aileen Wagner, Susanne Hagenow, Astrid Kleen-Fehres | 2020-11-17 |
| 10667998 | Odor-reduced bleaching | Stefan Hoepfner, Matthias Schweinsberg | 2020-06-02 |
| 10624825 | Method for homogenously dyeing keratinous fibers | Camille Grosjacques, Susanne Hagenow, Sylvia Kerl, Astrid Kleen-Fehres | 2020-04-21 |
| 10596097 | Method for multi-tonal color modification of keratinous fibers | Stefan Hoepfner, Matthias Schweinsberg | 2020-03-24 |
| 10293191 | Hair-conditioning agent and method for oxidative hair dyeing with improved brightening performance | Sylvia Kerl, Susanne Bietz, Thomas Hippe | 2019-05-21 |
| 10265252 | Odor-reducing developer for oxidation dyes | Stefan Hoepfner, Matthias Schweinsberg, Astrid Kleen-Fehres | 2019-04-23 |
| 10143646 | Oxidative coloring or blonding agent gentle on hair, and gentle hair coloring or blonding method | Thomas Hippe, Astrid Kleen-Fehres | 2018-12-04 |
| 9993406 | Agent and method for oxidative hair coloring which are gentle on keratin fibers | Thomas Hippe, Stefan Hoepfner, Jessica BRENDER | 2018-06-12 |
| 9980891 | Agent and method for oxidative hair coloring or bleaching, which are gentle on hair | Thomas Hippe, Astrid Kleen-Fehres | 2018-05-29 |
| 8882855 | Gel-based oxidation colorant including an emulsifier combination and thickener | Christiane Witte | 2014-11-11 |
| 8668745 | Brightening agent comprising acylpyridinium compounds and defined alkalizing agents | Wibke Gross, Ralph Nemitz, Astrid Kroos, Frank Janssen, Astrid Kleen +1 more | 2014-03-11 |
| 8597371 | Lightening agent comprising acyl pyridinium compounds and cationic polysaccharides | Wibke Gross, Ralph Nemitz, Astrid Kroos, Frank Janssen, Astrid Kleen +1 more | 2013-12-03 |
| 8110010 | Coated coloring agents | Carolin Welz, Astrid Kleen, Mustafa Akram | 2012-02-07 |
| 8025704 | Matting additive for blond hair dyeing | — | 2011-09-27 |
| 7294153 | Caring oxidation coloring agent in a tube | Astrid Kleen, Mustafa Akram, Stefan Hoepfner | 2007-11-13 |
| 7247173 | Tinting agent in tubes | Astrid Kleen, Mustafa Akram, Susanne Bietz, Stefan Hoepfner, Maureen Rippe | 2007-07-24 |