Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7746004 | Discharge-lamp lighting apparatus | Kengo Kimura | 2010-06-29 |
| 7339800 | Switching power source device of resonance type capable of controlling switching loss and noise | — | 2008-03-04 |
| 7330365 | Synchronous commutation DC-DC converter | Hiroshi Usui, Ryuichi Furukoshi | 2008-02-12 |
| 7239533 | DC power supply apparatus | Syohei Osaka, Toshirou Takeuchi | 2007-07-03 |
| 7221128 | Converter with start-up circuit | Hiroshi Usui, Yasuhiro Rikiishi, Syouhei Osaka | 2007-05-22 |
| 7212417 | Dual-mode switching DC-to-DC converter | — | 2007-05-01 |
| 6980445 | Power factor improving converter and control method thereof | Hiroshi Usui, Koichi Morita | 2005-12-27 |