Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6190033 | High gas dispersion efficiency glass coated impeller | Wayne N. Rickman, Matthias Heinzmann | 2001-02-20 |
| 6082890 | High axial flow glass coated impeller | Matthias Heinzmann, Wayne N. Rickman | 2000-07-04 |
| 5464498 | Flexural spring support for vibratory apparatus | — | 1995-11-07 |