Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7044158 | Continuous filtration systems using pump, venturi and flow control valve | Karl C. Huff | 2006-05-16 |
| 6149824 | Continuous filtration system using single pump, venturi, and flow control valve | Karl C. Huff | 2000-11-21 |
| 5725758 | Filtration system and assembly | Karl C. Huff | 1998-03-10 |