Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11713255 | Water filter cartridge | Harry Joseph Knopke, Jon H. Bechtel, Jay Everett VandenBrink | 2023-08-01 |
| 11053137 | Water filter cartridge | Harry Joseph Knopke, Jon H. Bechtel, Jay Everett VandenBrink | 2021-07-06 |