Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5646144 | 1-acylpiperidine compounds | Walter Schilling, Siem Jacob Veenstra | 1997-07-08 |
| 5604247 | Chromone Derivatives | Andreas von Sprecher, Marc Gerspacher, Robert Mah, Silvio Roggo, Walter Schilling +1 more | 1997-02-18 |