Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6455455 | Silicon-aluminum mixed oxide | Klaus Deller, Dieter Kerner, Helmut Mangold | 2002-09-24 |
| 6423331 | Bactericidal silicon dioxide doped with silver | Helmut Mangold | 2002-07-23 |