Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4326852 | Method for increasing the bulk weight of silicon dioxide | Gunter Kratel, Gerhard Dummer, Peter Niessner, Gunter Stohr | 1982-04-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4326852 | Method for increasing the bulk weight of silicon dioxide | Gunter Kratel, Gerhard Dummer, Peter Niessner, Gunter Stohr | 1982-04-27 |