Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6020486 | Depolymerization of polyamides | Martin Booij, Yvonne H. Frentzen, Bart Kurt Stefaan Hommez | 2000-02-01 |
| 5175217 | Method for the photochemical conversion of tachysterol compounds into previtamin D compounds and of trans-vitamin D compounds into cis-vitamin D compounds using a polymeric photoinitiator | Sebastianus J. Halkes, Robert B. Koolstra | 1992-12-29 |
| 5035783 | Method for the photochemical conversion of tachysterol compounds into previtamin D compounds and of trans-vitamin D compounds into cis-vitamin D compounds | Sebastianus J. Halkes, Robert B. Koolstra | 1991-07-30 |