Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7168691 | Water resistant aerator system and method | — | 2007-01-30 |
| 7156378 | Air seal enclosure for an aerator | — | 2007-01-02 |
| 6318705 | Aspirator | — | 2001-11-20 |
| 6238577 | Self-leveling weir | — | 2001-05-29 |
| 6105593 | Fixed film media cleaner apparatus and method | Daniel Smartt, Don Murauskas | 2000-08-22 |
| 5702079 | Bat media support frame apparatus and method | — | 1997-12-30 |
| 5599452 | Wastewater treatment method | Nianfa Tang | 1997-02-04 |
| 5484524 | Wastewater treatment apparatus | Nianfa Tang | 1996-01-16 |
| 5430925 | Biofilm support media assembly method | — | 1995-07-11 |
| 5388316 | Biofilm support media assembly apparatus and method | — | 1995-02-14 |
| 4404441 | Switching device with separate switching and actuator rods | — | 1983-09-13 |
| D259261 | Aerator motor assembly for a sewer system | — | 1981-05-19 |