Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9315395 | Water treatment system | Christopher L. Hansen | 2016-04-19 |
| 8883006 | Fluid treatment system | Jerome P. Kovach, Stuart Park | 2014-11-11 |
| 8741148 | Water treatment system | Stuart Park, Stephen P. Goff, Steven Hoopes | 2014-06-03 |
| 7316774 | Fluid treatment system | George Shoemaker Ellis, Stuart Park | 2008-01-08 |
| 6764595 | Fluid treatment system | George Shoemaker Ellis | 2004-07-20 |
| 6428708 | Filter apparatus and method | Stuart Park | 2002-08-06 |
| 6214214 | Water treatment system with purge valve responsive to fluid signals | Christopher L. Hansen, Stuart Park | 2001-04-10 |
| 4972877 | Bypass valve | George Shoemaker Ellis, David Crozier | 1990-11-27 |