Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6927518 | Direct current machine having continuously arranged magnetic poles | Takeshi Tanaka | 2005-08-09 |
| 6870290 | Direct current motor using magnets with extensions | Takeshi Tanaka | 2005-03-22 |
| 6853325 | Pulse width modulation digital amplifier | Masako Arizumi | 2005-02-08 |