Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866023 | Process for the shaping agglomeration of particulate solids and solids produced by the process | Wolfgang Ritter, Franz-Josef Carduck | 1989-09-12 |
| 4797964 | Compositions for finishing textiles | Wolfgang Ritter, Kaspar Schlueter, Heinz Hassenjuergen | 1989-01-17 |