Issued Patents All Time
Showing 51–58 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 5598048 | Integrated passive magnetic bearing system and spindle magnet for use in an axial magnet spindle motor | John C. Dunfield | 1997-01-28 |
| 5587617 | Integrated passive magnetic bearing system and spindle magnet for use in an axial magnet spindle motor | John C. Dunfield | 1996-12-24 |
| 5578882 | Passive magnetic bearings for a spindle motor | John C. Dunfield, Gunter Heine | 1996-11-26 |
| 5579188 | Ironless spindle motor for disc drive | John C. Dunfield, Gunter Heine, Marcel Jufer | 1996-11-26 |
| 5561335 | Integrated passive magnetic bearing system and spindle permanent magnet for use in a spindle motor | John C. Dunfield | 1996-10-01 |
| 5545937 | Integrated passive magnetic bearing system and spindle permanent magnet for use in a spindle motor | John C. Dunfield | 1996-08-13 |
| 5541460 | Passive magnetic bearings for a spindle motor | John C. Dunfield, Gunter Heine | 1996-07-30 |