Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D490270 | Cookware handle | Susan K. Hoff | 2004-05-25 |
| D486356 | Support ring for a cooking utensil | Susan K. Hoff | 2004-02-10 |
| 6634380 | Ceramic disc diverter valve | Eric K. Bartkus | 2003-10-21 |
| 5853572 | Home water purification system | Roy W. Kuennen, Robin M. Dykhouse, Dennis J. Kool, Ronald C. Markham, Dennis E. Kidd +1 more | 1998-12-29 |
| 5803940 | Air treatment system | Bradley G. Rick, Dale Aberegg | 1998-09-08 |
| 5800583 | Air treatment system | Dale Aberegg | 1998-09-01 |
| 5762667 | Air treatment system | Dale Aberegg | 1998-06-09 |
| 5698091 | Home water purification system with filter end of life monitor | Roy W. Kuennen, Robin M. Dykhouse, Dennis J. Kool, Ronald C. Markham, Dennis E. Kidd +1 more | 1997-12-16 |
| 5536395 | Home water purification system with automatic disconnecting of radiant energy source | Roy W. Kuennen, Robin M. Dykhouse, Dennis J. Kool, Ronald C. Markham, Dennis E. Kidd +1 more | 1996-07-16 |
| D348722 | Faucet diverter valve | — | 1994-07-12 |
| 5279329 | Faucet diverter valve | — | 1994-01-18 |