Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5656262 | Skin-coloring powder mixture | Thekla Kurz, Sabine Hitzel, Ralf Emmert | 1997-08-12 |
| 5600007 | Use of .alpha.-hydroxyketoalkyl derivatives as light protection filters | Ingeborg Stein, Ulrich Heywang, Michael Schwarz, Thekla Kurz | 1997-02-04 |