Issued Patents 2019
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10413498 | Agents for dyeing keratin fibers, containing at least one dimeric, dicationic azo dye and at least one anionic and/or cationic surfactant | Helmut Giesa, Astrid Kroos | 2019-09-17 |
| 10406089 | Agents for dyeing keratin fibres, containing at least one dimeric, dicationic azo dye with special substitution pattern | Helmut Giesa, Astrid Kroos | 2019-09-10 |
| 10307354 | Resorcinol derivatives in compositions for simultaneous reshaping and coloring of keratinous fibers | Annika Koenen | 2019-06-04 |
| 10251826 | Alkaline agent for lightening hair containing oxidants and special carboxylic acid esters | Helmut Giesa, Astrid Kroos | 2019-04-09 |
| 10226647 | Agents for dyeing keratin fibers, containing at least one dimeric, dicationic azo dye and at least one anionic surfactant | Helmut Giesa, Annika Koenen | 2019-03-12 |
| 10226648 | Agents for dyeing keratin fibres, containing at least one dimeric, dicationic azo dye and at least one non-ionic surfactant | Melanie Moch | 2019-03-12 |