Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8241586 | Operatory water disinfection system | Philip M. Prinsen | 2012-08-14 |
| 6277291 | Flowthrough batch liquid purifier | — | 2001-08-21 |
| 6039884 | Reversible flow circuit for batch liquid purifier | Philip M. Prinsen | 2000-03-21 |
| 6013189 | Vented batch liquid purifier | — | 2000-01-11 |
| 5858283 | Sparger | — | 1999-01-12 |
| 5529760 | Ozone generator | — | 1996-06-25 |
| 5422043 | Diffuser and diffusing method using dual surface tensions | — | 1995-06-06 |
| 5213773 | Treatment of liquid on demand | — | 1993-05-25 |
| 5207993 | Batch liquid purifier | — | 1993-05-04 |
| 5082558 | Compact contact lens purification system using ozone generator | — | 1992-01-21 |