Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6972077 | Cells and electrodes for electrocoagulation treatment of wastewater | Harry Slack | 2005-12-06 |
| 6902678 | Bilge water reclamation system and process | — | 2005-06-07 |
| 6669839 | Wastewater pretreatment, gathering and final treatment process | Guy L. Harrell | 2003-12-30 |
| 6464865 | Wastewater dispersal system | Douglas E. Fessel | 2002-10-15 |
| 6413427 | Nitrogen reduction wastewater treatment system | Douglas E. Fessel | 2002-07-02 |
| 6238546 | Electrochemical treatment of effluent water | Louis H. Knieper, Daniel G. Noyes | 2001-05-29 |
| 6103109 | Wastewater treatment system | Dan G. Noyes, Louis H. Knieper | 2000-08-15 |
| 5775840 | Apparatus and method for removal of vapors from subsoil | Louis H. Knieper | 1998-07-07 |