Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10738454 | Wall-hung toilet | Thomas M. Spankowski, Michael R. Bates, Rob Davis, Carl Barlett, John Zutz | 2020-08-11 |
| 10066380 | Toilet bowl discharge valve assembly | Benjamin W. Marotz, Charles R. Kopplin, Jeffrey F. Tempas | 2018-09-04 |
| 8230533 | Toilet bowl discharge valve assembly | Benjamin W. Marotz, Charles R. Kopplin, Jeffrey F. Tempas | 2012-07-31 |
| 7284286 | Toilet discharge valve | Charles R. Kopplin, Benjamin W. Marotz | 2007-10-23 |
| 5343576 | Combined bathing seat and back rest member | Todd D. Dannenberg, Peter W. Swart, Larry H. Panzer | 1994-09-06 |
| 5220696 | Tub with inflatable seal door | Todd D. Dannenberg, Peter W. Swart, John M. Bloemer, Anthony M. August, Anton J. Kolar | 1993-06-22 |
| 5163187 | Tub with inflatable seal door | Todd D. Dannenberg, Peter W. Swart, John M. Bloemer | 1992-11-17 |