Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6007796 | Cosmetic self-tanning agent having a sunscreen effect | Ralph Macchio, Klaus Stanzl, Leonhard Zastrow | 1999-12-28 |
| 5993857 | Cosmetic skin cleanser based on natural active substances | Ralph Macchio, Klaus Stanzl, Leonhard Zastrow | 1999-11-30 |