Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4459144 | Multi-stage counter-current concentration system and method | Willem Van Pelt | 1984-07-10 |
| 4316368 | Multi-stage counter-current concentrating method | Willem Van Pelt | 1982-02-23 |