Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11202742 | Product for lightening hair, containing special oxo-carboxylic acids | Annika Koenen, Astrid Kroos | 2021-12-21 |
| 10955344 | Method and device for determining a degree of damage to hair | Georg Knuebel, Annika Koenen, Astrid Kroos, Melanie Moch, Wilfried Howorka | 2021-03-23 |