Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824603 | Amphoteric and zwitter-ionic phosphate surfactants | Ulrich Zeidler | 1989-04-25 |
| 4801601 | N-substituted polyglycidyl urazole compounds, processes for their production and pharmaceutical preparations | Herbert Fischer, Brigitte Hase, Hans-Christoph Wilk, Ulrich Zeidler | 1989-01-31 |