Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6664772 | DC to DC converter producing output voltage exhibiting rise and fall characteristics independent of load thereon | Hidetoshi Yano, Hidekiyo Ozawa, Seiya Kitagawa, Toshiyuki Matsuyama, Takashi Matsumoto +2 more | 2003-12-16 |
| 6657415 | Portable apparatus | Kouichi Matsuda, Hidekiyo Ozawa, Shigeo Tanaka | 2003-12-02 |
| 6639812 | Power supply control circuit that adjusts output power based on variable input power | Shigeaki Nakazawa, Hidetoshi Yano, Hidekiyo Ozawa, Kouichi Matsuda, Shigeo Tanaka | 2003-10-28 |
| 6566766 | DC-DC converter circuit, power supply selection circuit, and apparatus | Kouichi Matsuda, Hidekiyo Ozawa | 2003-05-20 |