Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11180910 | Toilet with non-vitreous flush engine | Billy Jack Ahola, Andrew L. Smith, Mark E. Baumgartner, Donald G. Bogenschuetz, Tobin J. Vetting +1 more | 2021-11-23 |
| 11028567 | Plumbing fixture with drain-casted jet orifice | Andrew L. Smith, Lawrence E. Duwell, Donald G. Bogenschuetz, Billy Jack Ahola, Scott R. Krebs | 2021-06-08 |
| 11021863 | Pre-primed siphonic toilet | Andrew L. Smith, Billy Jack Ahola, Mark E. Baumgartner, Larry Duwell, Don Bogenschuetz +1 more | 2021-06-01 |
| 10995482 | Toilet coupling | John F. Emmerling, Scott W. Stonecipher, Billy Jack Ahola | 2021-05-04 |