Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841184 | Velocity and imbalance observer control circuit for active magnetic bearing or damper | Hsiang Ming Chen, Robert E. Johnson | 1989-06-20 |
| 4304411 | Magnetic/centrifugal-fluid seal | Donald F. Wilcock | 1981-12-08 |