Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5252191 | Method for the photochemical isomerization of organic compounds under the influence of a photosensitizer | Alphons Dufourny, Robert B. Koolstra, Hans Wynberg, Wolter Ten Hoeve | 1993-10-12 |
| 4464298 | Method of preparing .DELTA.5,7-steroids | Menso P. Rappoldt, Jan Hoogendoorn | 1984-08-07 |