Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11155771 | Method for preparing a liquid washing or cleaning agent using a preservative-free dye solution | Matthias Sunder, Stefan Hammelstein, Volker Blank, Thomas Holderbaum, Alexander Tollkoetter +2 more | 2021-10-26 |