Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5674792 | Shaped body having a high silicon dioxide content and a process for producing such shaped bodies | Stephan Moritz | 1997-10-07 |
| 5643347 | Process for manufacture of silica granules | Waltraud Werdecker, Rolf Gerhardt, Hartwig Schaper | 1997-07-01 |