Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696074 | Liquid crystalline, aqueous surfactant preparations | Dieter Nickel, Manfred Weuthen | 1997-12-09 |
| 5591377 | Viscous water-based surfactant preparation | Dieter Nickel | 1997-01-07 |