Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5200530 | Keto reduction of carbacyclin intermediates | Helmut Dahl, Gabriela Buttner | 1993-04-06 |
| 4232577 | Apparatus for longitudinally cutting webs of material | Wilfried Wallmann, Manfred Menzel | 1980-11-11 |