Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7753215 | Solvent extraction method and apparatus | Bernd Gigas | 2010-07-13 |
| 7550120 | Cylindrical mixer-settler apparatus and method | Michael Joseph Preston | 2009-06-23 |
| 7384551 | Trapezoid settler apparatus and method for solvent extraction | Bernd Gigas, Michael Joseph Preston | 2008-06-10 |
| 7331704 | Start-up method for draft tube mixing | Richard Howk | 2008-02-19 |
| 7328809 | Solvent extraction method and apparatus | Bernd Gigas | 2008-02-12 |
| 6109449 | Mixing system for separation of materials by flotation | Richard Howk, Thomas A. Post | 2000-08-29 |