Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874579 | Acylated 3-amino-1,2,4-triazoles as corrosion inhibitors for non-ferrous metals | Karl Schmid, Josef Penninger | 1989-10-17 |
| 4833147 | Sebosuppressive compositions and method for suppressing sebaceous gland activity | Siegfried Wallat | 1989-05-23 |
| 4828568 | Oxidation hair-dyeing preparations | Guenther Konrad, Edgar Lieske | 1989-05-09 |