Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672330 | Flame-hydrolytically produced titanium dioxide mixed oxide method of its production and its use | Werner Hartmann, Helmut Mangold | 1997-09-30 |
| 5665156 | Silanized silicon acids | Manfred Ettlinger, Jurgen Meyer | 1997-09-09 |