Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9095794 | Zero-backwash liquid filter | — | 2015-08-04 |
| 5620162 | Adjustable paper holder | Tanya L. Beckwith, Wayne K. Darvell, Lawrence J. Fenske, Kenneth J. Kirchhoff, Lynette M. Miles +1 more | 1997-04-15 |
| 5045187 | Regeneration system for water conditioners such as water softeners | — | 1991-09-03 |
| 4753726 | Distributor for filters | — | 1988-06-28 |