Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11247918 | Multi-media clarification systems and methods | Darin St. Germain, Jonathan Bay Farrell, Darrell Wayne Christianson | 2022-02-15 |
| 11130693 | Combination biological contactor and self-backwashing filter systems | Thomas Martin Dumbaugh, Eric Allen Lawrence, Rand S Faaborg, Darrell Wayne Christianson, Rene Ann Carson | 2021-09-28 |
| 10913667 | Multi-media clarification systems and methods | Darin St. Germain, Jonathan Bay Farrell, Darrell Wayne Christianson | 2021-02-09 |