Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7318929 | Cosmetic preparations | Ludwig Schieferstein, Werner Seipel, Dagmar Goebels | 2008-01-15 |
| 5959013 | Production of thickening agents in liquid state | Wolfgang Gress, Ralf Neumann, Ludwig Schieferstein, Heinz-Guenther Schulte | 1999-09-28 |
| 5863461 | Water-in-oil emulsions | Achim Ansmann, Rolf Kawa, Ludwig Schieferstein | 1999-01-26 |
| 5501707 | Aqueous dispersions of new amphiphilic co-oligomers for the washing- and cleaning-resistant oiling of leather and skins and their use | Ludwig Schieferstein, Rudolf Zauns-Huber, Emil Ruscheinsky | 1996-03-26 |