Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5976432 | Method and apparatus for the continuous extrusion of block elements | Mark A. Wessel, Anthony C. Kortenhorn | 1999-11-02 |
| 5931578 | Extruder and extrusion screw therefor | Timothy W. Womer | 1999-08-03 |
| 5823668 | Extruder and extrusion screw therefor | Timothy W. Womer | 1998-10-20 |
| 5225078 | Pour-through pitcher filter | Ralph A. Polasky | 1993-07-06 |
| 5106501 | Multi-function filter cartridge with flow distribution control | Gary L. Hatch, Thomas Holler | 1992-04-21 |