Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9783433 | Water treatment valve control system with rotary position sensor | Andrew J. Kajpust, Daryl D. Sielaff | 2017-10-10 |
| D754613 | Controller | Gary F. Prokop | 2016-04-26 |
| 5830324 | Controlled continuous purification of propylene oxide by extractive distillation | Andrew C. Hiester, Mark E. Taylor, Mark A. Mueller, Michael W. Peters, William Pleasie Nelson | 1998-11-03 |
| 5466407 | Incineration residue treatment process | William A. Roberts | 1995-11-14 |
| 5286430 | Incineration residue treatment process | William A. Roberts | 1994-02-15 |