Issued Patents All Time
Showing 1–25 of 70 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8368373 | Control circuit of power supply unit, power supply unit and control method thereof | Toru Nakamura | 2013-02-05 |
| RE43911 | Control system for charging batteries and electronic apparatus using same | Kouichi Matsuda, Mitsuo Saeki, Nobuo Tanaka | 2013-01-08 |
| 7960946 | Power supply circuit, power supply control circuit, and power supply control method | Toru Nakamura | 2011-06-14 |
| 7957165 | DC-DC converter with a plurality of soft-start control circuits | Morihito Hasegawa | 2011-06-07 |
| 7948219 | Control circuit of synchronous rectification type power supply unit, synchronous rectification type power supply unit and control method thereof | Morihito Hasegawa | 2011-05-24 |
| 7944190 | Control circuit of power supply unit which controls output power of external power supply based upon current from the external power supply, power supply unit and control method thereof | Morihito Hasegawa | 2011-05-17 |
| 7928601 | Power supply circuit for providing semiconductor integrated circuit device with a plurality of power supply voltages | Hidenobu Ito, Chikara Tsuchiya | 2011-04-19 |
| RE42114 | Control system for charging batteries and electronic apparatus using same | Kouichi Matsuda, Mitsuo Saeki, Nobuo Tanaka | 2011-02-08 |
| 7781909 | Control circuit of power supply, power supply and control method thereof | Morihito Hasegawa | 2010-08-24 |
| 7719136 | Power source control circuit, power supply device, and control method for the same | Toru Nakamura | 2010-05-18 |
| 7705483 | DC-DC converter control circuit, DC-DC converter, power supply unit, and DC-DC converter control method | Morihito Hasegawa | 2010-04-27 |
| 7701178 | Charge control that keeps constant input voltage supplied to battery pack | Masaya Tsukamoto, Akira Haraguchi | 2010-04-20 |
| 7679214 | Electronic device incorporating system power supply unit and method for supplying power supply voltage | Toru Nakamura | 2010-03-16 |
| 7675267 | Control circuit of power supply and control method of the power supply | Takashi Matsumoto, Takahiro Yoshino, Toru Nakamura | 2010-03-09 |
| 7663345 | Circuit and method for controlling DC-DC converter | Takashi Matsumoto, Takahiro Yoshino | 2010-02-16 |
| 7545054 | DC linear regulator single controller with plural loads | Morihito Hasegawa, Toru Nakamura | 2009-06-09 |
| 7489528 | Power supply control method, current-to-voltage conversion circuit and electronic apparatus | Shigeo Tanaka | 2009-02-10 |
| 7423415 | DC-DC converter and its control method, and switching regulator and its control method | Morihito Hasegawa | 2008-09-09 |
| 7298117 | Step-up (boost) DC regulator with two-level back-bias switch gate voltage | Morihito Hasegawa, Shoji Tajiri, Toshihiko Kasai | 2007-11-20 |
| 7279870 | DC-DC converter and method of controlling DC-DC converter | Morihito Hasegawa | 2007-10-09 |
| 7221131 | Control circuit for DC-DC converter in semiconductor integrated circuit device | Hidenobu Ito, Chikara Tsuchiya, Yasushige Ogawa | 2007-05-22 |
| 7148587 | DC-DC converter circuit, power supply selection circuit, and apparatus useful for increasing conversion efficiency | Kouichi Matsuda, Mitsuo Saeki | 2006-12-12 |
| 7129682 | DC to DC converter producing output voltage exhibit rise and fall characteristics independent of load thereon | Mitsuo Saeki, Hidetoshi Yano, Seiya Kitagawa, Toshiyuki Matsuyama, Takashi Matsumoto +2 more | 2006-10-31 |
| 7122995 | Multi-phase DC-DC converter and control circuit for multi-phase DC-DC converter | Morihito Hasegawa | 2006-10-17 |
| 7116258 | A/D converter, D/A converter and voltage source | Kazuyoshi Arimura, Atsushi Hayakawa | 2006-10-03 |