Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7678268 | Wastewater treatment system | Duane R. Smith, Michael Howdeshell, Lori Marten, Thomas J. Vollstedt, Robert J. Wenta +2 more | 2010-03-16 |
| 5302288 | Treatment of highly colored wastewaters | Thomas J. Vollstedt | 1994-04-12 |
| 5192442 | Multiple zone batch treatment process | John Guido Piccirillo | 1993-03-09 |
| 4857198 | Process for treatment of water containing volatile and toxic compounds | — | 1989-08-15 |
| 4620563 | Blowdown pot for a reactor | Thomas J. Vollstedt | 1986-11-04 |