Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10781125 | Biomass selection and control for continuous flow granular/flocculent activated sludge processes | Hiren Trivedi, John Vorwaller, Tyson Beaman | 2020-09-22 |
| 5985649 | Device and method for removal of gas contaminates through a shallow sparged bioreactor | Angela R. Bielefeldt | 1999-11-16 |
| 5874291 | Degradation of environmental toxins by a filamentous bacterium | Angela R. Bielefeldt, Stuart E. Strand, Russell P. Herwig | 1999-02-23 |
| 5582734 | Oxidation ditch modification and automated control system for nitrogen removal and sludge settling improvements | Thomas E. Coleman, W. Brent Denham, Darrel S. Fleischman | 1996-12-10 |
| 4303516 | Orbital wastewater treatment system with integral clarification | Peter Maier, Mark G. Biesinger, David R. Refling, Ronald P. Klepper, John V. Maxham | 1981-12-01 |