Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5507946 | Apparatus for wastewater treatment | — | 1996-04-16 |
| 5275735 | Method and apparatus for dissolving gas in liquid, e.g., in wastewater collection and transmission systems | — | 1994-01-04 |
| 5190670 | Process and system for separating and condensing contaminants from a liquid | — | 1993-03-02 |
| 5133882 | Barge mounted oil recovery and recycle system | — | 1992-07-28 |
| 5125167 | Organic vapor containment and recycle system for open tanks and containers | — | 1992-06-30 |
| 5045202 | Centrifugal oxygenator for treatment of waste water and system | Walter D. Haentjens, Thomas E. Stirling | 1991-09-03 |
| 4976863 | Wastewater treatment process | — | 1990-12-11 |