Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6174434 | Three zone dissolved air floatation clarifier with fixed lamellae and improved paddle-and-ramp sludge removal system | — | 2001-01-16 |
| 5863441 | Three zone dissolved air flotation clarifier with improved efficiency | — | 1999-01-26 |
| 5846413 | Three zone dissolved air flotation clarifier with improved efficiency | — | 1998-12-08 |
| 5567319 | High capacity single tank water clarification method | — | 1996-10-22 |
| 5415771 | High capacity single tank water clarification system | — | 1995-05-16 |
| 5320750 | Water clarifier with first filtrate isolation, improved backwashing and improved bubble generation | — | 1994-06-14 |
| 5310459 | Apparatus and method for deinking waste paper pulp | — | 1994-05-10 |
| 5306422 | Compact clarifier system for municipal waste water treatment | — | 1994-04-26 |
| 5296149 | Lamellar apparatus and method for clarifying water | — | 1994-03-22 |
| 5268099 | Lamellar clarifier with rectilinear tank | Robert P. Langdon | 1993-12-07 |
| 5242585 | Apparatus and method for deinking waste paper pulp | — | 1993-09-07 |
| 5188729 | Sludge collection apparatus for a water clarifier | — | 1993-02-23 |
| 5160611 | Apparatus for aerating water | — | 1992-11-03 |
| 5145582 | Method for stabilizing sludge | — | 1992-09-08 |
| 5078861 | Water clarifying apparatus | — | 1992-01-07 |
| 5013429 | Apparatus for stabilizing sludge | — | 1991-05-07 |
| 4931175 | Water clarifying apparatus | — | 1990-06-05 |
| 4923600 | Water clarification system adapted for removing particulate matter of greater than a predetermined size | — | 1990-05-08 |
| 4673494 | Water treatment apparatus | — | 1987-06-16 |
| 4626345 | Apparatus for clarification of water | — | 1986-12-02 |
| 4377485 | Apparatus and method for clarification of water using combined flotation and filtration processes | — | 1983-03-22 |
| 4184967 | Apparatus for clarifying waste water | — | 1980-01-22 |