Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9006919 | Adaptive hydrokinetic energy harvesting system | — | 2015-04-14 |
| 8025795 | Ballast water treatment system | Jeffrey G. Miner, Richard E. Fredricks, Christopher Constantine | 2011-09-27 |
| 6616833 | Ship-board system for decontaminating wastewater contaminated by firefighting operations | — | 2003-09-09 |
| 6599422 | Separator for liquids containing impurities | Christopher Constantine, Richard E. Fredricks | 2003-07-29 |
| 6500345 | Apparatus and method for treating water | Christopher Constantine, Richard E. Fredricks | 2002-12-31 |
| 5587074 | Fluid filter with enhanced backflush flow | Joseph P. Quinn | 1996-12-24 |