Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6890433 | System for treating wastewater | Theophilus B. Terry, III | 2005-05-10 |
| 6841066 | Filtration device for a waste water treatment system | John F. Christensen | 2005-01-11 |
| D483836 | Biofilter treatment module | Theophilus B. Terry, III | 2003-12-16 |
| 6592755 | System for treating wastewater | — | 2003-07-15 |
| 6540912 | Aerobic polishing system for wastewater | Theophilus B. Terry, III | 2003-04-01 |
| 6478957 | Filtering apparatus for a wastewater treatment tank | Theophilus B. Terry, III | 2002-11-12 |
| 6360898 | Filtration device for a waste water treatment system | John F. Christensen | 2002-03-26 |
| 6338797 | Filter device for wastewater treatment system | Theophilis B. Terry, III | 2002-01-15 |
| 6306299 | Filtration device for a waste water treatment system | John F. Christensen | 2001-10-23 |
| 6129837 | Waste water treatment filter including a waste water level control alert device | — | 2000-10-10 |
| 6047724 | Risers for a waste water treatment facility | — | 2000-04-11 |
| 6006612 | Waste water effluent test method and assembly | Lawrence E. Gravely | 1999-12-28 |
| 5795472 | Multistage filter device including a housing with removable sidewalls having a filtering capacity | — | 1998-08-18 |
| 5779896 | Gas baffle for a waste water treatment plant effluent | — | 1998-07-14 |
| 5762793 | Filter apparatus for waste water discharge system | — | 1998-06-09 |
| 5759393 | Filter device | — | 1998-06-02 |
| 5736035 | Outlet filter for waste water treatment tank | — | 1998-04-07 |
| D386241 | Outlet filter for waste water treatment tank | — | 1997-11-11 |
| 5683577 | Filter device for wastewater treatment system | — | 1997-11-04 |
| 5593584 | Septic tank filter | — | 1997-01-14 |
| 5591331 | Filter device including a housing with removable sidewalls having a filtering capacity | — | 1997-01-07 |
| 5582716 | Filter for septic tanks | — | 1996-12-10 |
| 5580453 | Filter apparatus for waste water discharge system | — | 1996-12-03 |
| 5482621 | Septic tank outlet filter | — | 1996-01-09 |
| 5382357 | Septic tank outlet filter | — | 1995-01-17 |