Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667225 | Self-draining shaft seal with wedge-shaped trough | Angela Vollmer | 1997-09-16 |
| 5639643 | Preparation of 3-hydroxyphenylacetic acid | Horst Ralf Staudenmaier, Bernhard Hauer, Wolfgang Ladner, Ursula Mueller, Uwe Pressler | 1997-06-17 |