Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4436823 | Silica gels incorporating insolubilized reagents | Peter Fischer, Hans-Joachim Vahlensieck | 1984-03-13 |
| 4301027 | Silica gels incorporating insolubilized reagents | Peter Fischer, Hans-Joachim Vahlensieck | 1981-11-17 |
| 4251282 | Method of preparing dye pigments | Hans-Joachim Vahlensieck, Peter Fischer | 1981-02-17 |