Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8169799 | Power factor correction circuit | — | 2012-05-01 |
| 7453248 | Switching power supply device | — | 2008-11-18 |
| 7239533 | DC power supply apparatus | Yukinari Fukumoto, Syohei Osaka | 2007-07-03 |