Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6488915 | Use of sunscreen combinations which comprise, as essential constituent, 2-(4-alkoxyanilinomethylene) malonic dialkyl esters as photostable UV filters in cosmetic and pharmaceutical preparations | Thomas Heidenfelder, Thomas Wunsch | 2002-12-03 |
| 6489422 | Thickeners for surfactant-containing compositions | Helmut Meffert | 2002-12-03 |
| 6458342 | Use of sunscreen combinations comprising, as essential constituent, 2,2′-p-phenylenebis (3,1-benzoxazin-4-one) as photostable UV filters in cosmetic and pharmaceutical preparations | Thomas Heidenfelder, Thomas Wunsch | 2002-10-01 |
| 6444785 | Preparation of W/O emulsions | Michael Gotsche, Claudia Wood | 2002-09-03 |
| 6399679 | Thickeners for surfactant-containing compositions | Helmut Meffert | 2002-06-04 |