Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D479578 | Float valve for filling a flush tank | — | 2003-09-09 |
| D467322 | Cover for a flushing tank | — | 2002-12-17 |
| D466203 | Flush actuator for sanitary systems | — | 2002-11-26 |
| D465014 | Push-button for water closets | — | 2002-10-29 |
| D463016 | Cover for a flushing tank | — | 2002-09-17 |
| 6189971 | Task chair with adjustable seat depth | — | 2001-02-20 |
| 6038982 | Table with a height-adjustable tabletop part | — | 2000-03-21 |
| D348311 | Cover for concealed toilet flush tank | — | 1994-06-28 |
| D320070 | Toilet tank | — | 1991-09-17 |
| D318574 | Urinal partition wall | — | 1991-07-30 |