Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4787985 | Multi-stage purification unit process | Jacobus P. Roodenrijs | 1988-11-29 |
| 4557741 | Gradient column freeze concentration system | — | 1985-12-10 |
| 4430104 | Multi-stage countercurrent concentrating system and method and separator | Jacobus P. Roodenrijs | 1984-02-07 |