Issued Patents 1997
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698911 | Low leakage actuator for high performance | John C. Dunfield | 1997-12-16 |
| 5621591 | Dual coil voice coil motor | Alireza Rahimi | 1997-04-15 |
| 5619083 | Passive magnetic bearings for a spindle motor | John C. Dunfield, Gunter Heine | 1997-04-08 |
| 5610463 | Passive magnetic bearings for a spindle motor | John C. Dunfield, Gunter Heine | 1997-03-11 |
| 5598048 | Integrated passive magnetic bearing system and spindle magnet for use in an axial magnet spindle motor | John C. Dunfield | 1997-01-28 |
| 5598071 | Method for starting and commutating a permanent-magnet direct current motor having a single phase winding | John C. Dunfield, Gunter Heine, Marcel Jufer | 1997-01-28 |