Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6812583 | Electrical generator with ferrofluid bearings | Jeffrey T. Cheung | 2004-11-02 |
| 6812598 | Multiple magnet transducer with differential magnetic strengths | Jeffrey T. Cheung | 2004-11-02 |
| 6809427 | Electrical generator with ferrofluid bearings | Jeffrey T. Cheung | 2004-10-26 |
| 6798090 | Electrical power generation by coupled magnets | Jeffrey T. Cheung | 2004-09-28 |
| 6768230 | Multiple magnet transducer | Jeffrey T. Cheung | 2004-07-27 |