Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839098 | Liquid detergent | Klaus-Dieter Wisotzki, Ortburg Guirr, Peter Jeschke, Karl Schmid, Manfred Biermann | 1989-06-13 |
| 4801396 | Dishwasher detergent paste | Theodor Altenschopfer, Peter Christophliemk | 1989-01-31 |
| 4797231 | Multipurpose cleaning preparations for hard surfaces | Ortburg Guirr, Paul Schulz, Franz Foerg | 1989-01-10 |