Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883615 | Flameproofing compounds | Rainer Wolf | 1989-11-28 |
| 4838896 | Composition useful for aftertreating dyeings, printings and optical brightenings: epihaldhydrin-ammonia reaction product and allylamine polymer | Bruno Kissling | 1989-06-13 |