Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4333771 | Detergent composition with a mechanical cleaning effect | Klaus Schumann, Dieter Grodau | 1982-06-08 |
| 4324677 | Stable dishwashing agent compositions containing active chlorine | Jochen Kaufmann, Klaus Schumann, Friedel Rings | 1982-04-13 |