Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7157810 | Backup power supply | Akihiko Kanouda, Satoru Masuyama, Masato Isogai, Ryouhei Saga, Kenichi Onda | 2007-01-02 |
| 7053502 | Power supply with uninterruptible function | Nobuyuki Aihara, Takeshi Onaka, Kenichi Onda, Satoru Masuyama, Shigekazu Zemba | 2006-05-30 |
| 6977448 | Backup power supply | Akihiko Kanouda, Satoru Masuyama, Masato Isogai, Ryouhei Saga, Kenichi Onda | 2005-12-20 |
| 6795322 | Power supply with uninterruptible function | Nobuyuki Aihara, Takeshi Onaka, Kenichi Onda, Satoru Masuyama, Shigekazu Zemba | 2004-09-21 |
| 6738270 | Parallel power source system | Ryohei Saga, Masahiro Hamaogi | 2004-05-18 |
| 6643152 | DC power supply device | Kenichi Onda, Takeshi Onaka, Satoru Masuyama, Ryouhei Saga, Katsunori Hayashi | 2003-11-04 |
| 6603671 | Synchronized rectifier voltage step down DC-DC converter and control circuit therefor | Kenichi Onda, Takeshi Onaka, Ryouhei Saga, Akihiko Kanouda | 2003-08-05 |
| 6580597 | Voltage regulator module for micro processor and CPO using a super capacitor | Akihiko Kanouda, Kenichi Onda, Mikiya Nohara, Ryouhei Saga, Morinobu Endo | 2003-06-17 |
| 6567261 | DC-DC step-down converter with super capacitor | Akihiko Kanouda, Kenichi Onda, Mikiya Nohara, Ryouhei Saga, Morinobu Endo | 2003-05-20 |
| 6507507 | DC power supply device | Kenichi Onda, Takeshi Onaka, Satoru Masuyama, Ryouhei Saga, Katsunori Hayashi | 2003-01-14 |
| 6496395 | Direct-current power-supply apparatus, control circuit thereof and semiconductor integrated circuit device for power supply | Kenichi Onda, Tadashi Takahashi, Takeshi Onaka, Ryohei Saga, Katsunori Hayashi | 2002-12-17 |
| 6489756 | DC-DC converter with switchable control mode | Akihiko Kanouda, Kenichi Onda, Ryouhei Saga | 2002-12-03 |
| 6381152 | Method of driving semiconductor switching device in non-saturated state and power supply apparatus containing such a switching device | Tadashi Takahashi, Kenichi Onda, Takeshi Onaka, Ryouhei Saga, Katsunori Hayashi | 2002-04-30 |
| 6297616 | Charge and discharge system for electric power storage equipment | Kenji Kubo, Takahiro NOMURA, Hideki Miyazaki, Akihiko Emori | 2001-10-02 |
| 5446645 | Inverter apparatus and uinterruptible power supply using the same | Hidefumi Shirahama, Yorito Jifuku, Akira Kobayashi, Keizo Shimada, Yoshimi Sakurai +3 more | 1995-08-29 |
| 5297015 | Power supply control system | Hideki Miyazaki, Ikuo Yamato, Kenichi Onda, Yasuo Matsuda, Yuzo Morita +2 more | 1994-03-22 |
| 5285365 | Power conversion system, method for controlling the same, and uninterruptible power supply using the same | Ikuo Yamato | 1994-02-08 |
| 5274541 | Parallel circuit module including a diode and an IGBT | Shin Kimura, Yasuo Matsuda, Mutsuhiro Mori, Toshiki Kurosu, Yutaka Suzuki +4 more | 1993-12-28 |
| 5262935 | Parallel inverter control apparatus | Hidefumi Shirahama, Ikuo Yamato, Yoshimi Sakurai | 1993-11-16 |
| 5210479 | Drive circuit for an insulated gate transistor having overcurrent detecting and adjusting circuits | Shin Kimura, Nobuyoshi Mutoh, Satoshi Ibori, Shuuji Musha, Yasuo Matsuda +1 more | 1993-05-11 |
| 5115386 | Circuit for controlling an electric power supply apparatus, a method therefor and an uninterruptible power supply | Hidefumi Shirahama, Ikuo Yamato, Yasuo Matsuda, Mitsufumi Iwanaka, Takeshi Nagano +1 more | 1992-05-19 |
| 4933830 | Switching power supply | Masayoshi Sato, Hisao Amano, Yasuo Matsuda | 1990-06-12 |
| 4878163 | Pulse width modulated inverter with high-to-low frequency output converter | Ikuo Yamato, Yasuo Matsuda, Hisao Amano | 1989-10-31 |
| 4866589 | Voltage resonance type switching power source apparatus | Masayoshi Satoo, Hisao Amano, Teruaki Odaka, Yasuo Matsuda | 1989-09-12 |
| 4855887 | Current and frequency converter having means to reduce switching losses | Ikuo Yamato, Yasuo Matsuda, Hisao Amano | 1989-08-08 |