Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7060109 | Hair dyeing agents containing indigo derivatives | Horst Hoeffkes, Hinrich Moeller | 2006-06-13 |
| 5651793 | Hydrogen peroxide preparations containing foam regulators | Horst Hoeffkes, Winifried Neuhaus | 1997-07-29 |