Issued Patents All Time
Showing 26–50 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7880440 | Switching power supply | Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi | 2011-02-01 |
| 7876069 | Electrical power unit | Yasuaki Norimatsu, Mutsumi Kikuchi | 2011-01-25 |
| 7846568 | Power supply and control method therefor | Yasuaki Norimatsu, Mutsumi Kikuchi | 2010-12-07 |
| 7840840 | DC backup power supply system, a disk array and a DC backup power supply | Fumikazu Takahashi, Minehiro Nemoto, Masahiro Hamaogi, Yoshihide Takahashi | 2010-11-23 |
| 7800354 | Switching power supply | Kenichi Yokota | 2010-09-21 |
| 7728545 | Equipment with a built-in fuel cell | Mutsumi Kikuchi, Hideaki Koyama, Eisaku Fujita, Yasuaki Norimatsu | 2010-06-01 |
| 7705562 | Switching power supply unit and disk array system | Fumikazu Takahashi, Kuniyoshi Watanabe, Masahiro Hamaogi, Yoshihide Takahashi | 2010-04-27 |
| 7692400 | Mobile type power supply, connection device, and carried type electronic equipment | Yasuaki Norimatsu, Fumio Murabayashi | 2010-04-06 |
| 7667350 | Electric power source apparatus using fuel cell and method of controlling the same | Yasuaki Norimatsu, Mutsumi Kikuchi | 2010-02-23 |
| 7638904 | Isolated bidirectional DC-DC converter | Hiroyuki Shoji, Ryuichi Saito, Seigou Yukutake, Katsuhiro Higuchi | 2009-12-29 |
| 7626353 | Mobile type information terminal and self diagnosis method and operation method thereof | Mutsumi Kikuchi, Yasuaki Norimatsu, Junichi Kimura, Eisaku Fujita, Makoto Suzuki +4 more | 2009-12-01 |
| 7615980 | Marginal check voltage setting means built-in power-supply device | Takashi Sase, Yosuke Kawakubo | 2009-11-10 |
| 7589436 | Data processing unit and DC backup power supply | Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi | 2009-09-15 |
| 7557546 | Unidirectional DC-DC converter | Junpei Uruno, Hiroyuki Shoji, Yasuo Kaminaga | 2009-07-07 |
| 7551462 | Soft switching DC-DC converter including a buck converter and a boost converter sharing a common transformer | Junpei Uruno, Hiroyuki Shoji, Yasuo Kaminaga | 2009-06-23 |
| 7495415 | DC backup power supply system | Minehiro Nemoto, Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi, Takashi Tanabe +3 more | 2009-02-24 |
| 7432617 | Uninterruptible power system | Fumikazu Takahashi, Minehiro Nemoto, Masahiro Hamaogi | 2008-10-07 |
| 7406623 | DC backup power supply system and disk array using same | Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi, Minehiro Nemoto | 2008-07-29 |
| 7403365 | Over-current detection circuit and method for power-supply device | Takashi Sase, Yosuke Kawakubo, Kozaburo Kurita | 2008-07-22 |
| 7385380 | Switching power supply | Takuya Ishigaki, Takashi Sase, Koji Tateno, Ryotaro Kudo | 2008-06-10 |
| 7268611 | Semiconductor device and memory card using same | Mutsumi Kikuchi, Noboru Akiyama, Hiroyuki Shoji, Fumio Murabayashi, Takashi Sase +1 more | 2007-09-11 |
| 7245469 | DC backup power supply device and method for diagnosing the same | Minehiro Nemoto, Fumikazu Takahashi, Masahiro Hamaogi, Yoshihide Takahashi, Takashi Tanabe +3 more | 2007-07-17 |
| 7170273 | Power-supply device and hard disk drive using same | Takashi Sase, Katsunori Hayashi | 2007-01-30 |
| 7157810 | Backup power supply | Satoru Masuyama, Masato Isogai, Ryouhei Saga, Kenichi Onda, Norikazu Tokunaga | 2007-01-02 |
| 7138786 | Power supply driver circuit | Takuya Ishigaki, Takashi Sase, Koji Tateno, Ryotaro Kudo | 2006-11-21 |