Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8357293 | Biological waste digester | — | 2013-01-22 |
| 8133386 | Biological waste digester and method of operation | — | 2012-03-13 |
| 7476054 | Process for high-volume disposal of sludge and collection of combustible gases | — | 2009-01-13 |
| 7083324 | Integrated fixed film activated sludge system using gravity assisted mixing | — | 2006-08-01 |
| 6554259 | High dissolved oxygen mixer-digester | — | 2003-04-29 |
| 6036357 | Submarine-type liquid mixer | — | 2000-03-14 |
| 5762418 | Submarine-type liquid mixer | — | 1998-06-09 |
| 4309141 | Refuse-extruder-and-compactor apparatus | — | 1982-01-05 |
| 4253791 | Unloading-type conveyor system | — | 1981-03-03 |
| 4185731 | Apparatus for collecting solid and loose-waste materials | — | 1980-01-29 |