Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12048756 | Pigment suspension and method for dying keratinous material using the pigment suspension | Rene Krohn, Thomas Hippe, Stefan Hoepfner | 2024-07-30 |
| 11998629 | Method for dyeing keratinous material, comprising the use of an organosilicon compound, an effect pigment and a film-forming polymer | Rene Krohn, Thomas Hippe, Stefan Hoepfner | 2024-06-04 |
| 11883518 | Method for dyeing keratinous material, comprising the use of an organosilicon compound, an hydroxycarboxylic acid ester, a diol and a dyeing compound | Rene Krohn, Thomas Hippe, Stefan Hoepfner | 2024-01-30 |
| 11654095 | Method for dyeing keratinous material, comprising the use of an organosilicon compound, a chromophoric compound, a modified fatty acid ester and a sealing reagent II | Rene Krohn, Thomas Hippe, Stefan Hoepfner | 2023-05-23 |
| 9993406 | Agent and method for oxidative hair coloring which are gentle on keratin fibers | Hartmut Manneck, Thomas Hippe, Stefan Hoepfner | 2018-06-12 |