Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6524472 | Monolithically-molded subassemblies for retrofitting existing RO systems to zero waste | — | 2003-02-25 |
| 6524483 | Method of retrofitting an existing RO system to zero waste | — | 2003-02-25 |
| 6418728 | Thermoelectric water pre-cooling for an evaporative cooler | — | 2002-07-16 |
| 5976363 | Compact water-conserving kitchen water station with sink for supplying copious purified water, particularly for restaurants | Wayne Windenburg | 1999-11-02 |
| 5879558 | Water conserving reverse osmosis unit and method of operating it | John K. Hemingway | 1999-03-09 |
| 5639374 | Water-conserving pressure-maintaining reverse osmosis system | John K. Hemingway | 1997-06-17 |
| 5445729 | Counter top reverse osmosis system | Wayne T. Widenburg, Jon S. Ford, James Allen Monroe | 1995-08-29 |
| D343330 | Drinking fountain | Wayne Windenburg | 1994-01-18 |