Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6759065 | Extraction method, pharmaceutical composition and a cosmetic composition | — | 2004-07-06 |
| 4697428 | Device for concentrating solutions | Hans De Bree, Peter H. Van Amsterdam | 1987-10-06 |
| 4554071 | Pre-column for preconcentrating substances to be chromatographed as well as device for a liquid chromatography system and coupling member for said device | Hans De Bree, Peter H. Van Amsterdam, Elbert Wiegers | 1985-11-19 |