Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851140 | Aqueous liquid fabric treatment preparation | Rolf Puchta, Theodor Voelkel, Eric Sung | 1989-07-25 |
| 4839075 | Fabric-softening detergent | Rolf Puchta, Hannelore Casper | 1989-06-13 |
| 4814095 | After-wash treatment preparation based on layer silicate | Rolf Puchta, Theodor Voelkel | 1989-03-21 |