Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10927020 | High velocity cross flow dynamic membrane filter | Ingchen Douglas Hwang, Ludek Zatopek, Karel Vokurka | 2021-02-23 |
| 10246350 | High velocity cross flow dynamic membrane filter | Ingchen Douglas Hwang, Ludek Zatopek, Karel Vokurka | 2019-04-02 |
| 9926212 | High velocity cross flow dynamic membrane filter | Ingchen Douglas Hwang, Ludek Zatopek, Karel Vokurka | 2018-03-27 |
| 4668387 | Deep submergence rotating biological contactor apparatus | Donald N. Gass | 1987-05-26 |
| 4563282 | Wastewater treatment plant and method | John W. Wittmann, Robert C. Winkelman, Douglas F. Mooers | 1986-01-07 |