Issued Patents All Time
Showing 26–50 of 70 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7098639 | DC-DC converter and method for controlling DC-DC converter | Masahiro Natsume, Kyuichi Takimoto | 2006-08-29 |
| 7075463 | A/D converter, D/A converter and voltage source | Kazuyoshi Arimura, Atsushi Hayakawa | 2006-07-11 |
| 7045990 | Portable device having a charging circuit and semiconductor device for use in the charging circuit of the same | Kyuichi Takimoto | 2006-05-16 |
| 7019501 | DC/DC converter | Hirofumi Dogome, Takashi Matsumoto, Kyuichi Takimoto, Chikara Tsuchiya | 2006-03-28 |
| 6989652 | Protection method, control circuit, and battery unit | Mitsuo Saeki | 2006-01-24 |
| 6940737 | Power supply control method | Shigeaki Nakazawa, Hidetoshi Yano, Mitsuo Saeki, Kouichi Matsuda, Shigeo Tanaka | 2005-09-06 |
| 6911806 | DC to DC converter producing output voltage exhibiting rise and fall characteristics independent of load thereon | Mitsuo Saeki, Hidetoshi Yano, Seiya Kitagawa, Toshiyuki Matsuyama, Takashi Matsumoto +2 more | 2005-06-28 |
| 6897635 | Method for predicting remaining charge of portable electronics battery | Shigeo Tanaka | 2005-05-24 |
| 6724175 | POWER SUPPLY CONTROL DEVICE, POWER SUPPLY CIRCUIT, POWER SUPPLY CONTROL METHOD, AND ELECTRONIC APPARATUS CONTROLLING OUTPUT VOLTAGE THEREOF IN ACCORDANCE WITH A VOLTAGE DETECTED ACROSS AN ON SWITCHING ELEMENT | Kouichi Matsuda, Kazuhiko Itakura, Kyuichi Takimoto | 2004-04-20 |
| 6664772 | DC to DC converter producing output voltage exhibiting rise and fall characteristics independent of load thereon | Mitsuo Saeki, Hidetoshi Yano, Seiya Kitagawa, Toshiyuki Matsuyama, Takashi Matsumoto +2 more | 2003-12-16 |
| 6657415 | Portable apparatus | Mitsuo Saeki, Kouichi Matsuda, Shigeo Tanaka | 2003-12-02 |
| 6639812 | Power supply control circuit that adjusts output power based on variable input power | Shigeaki Nakazawa, Hidetoshi Yano, Mitsuo Saeki, Kouichi Matsuda, Shigeo Tanaka | 2003-10-28 |
| 6566766 | DC-DC converter circuit, power supply selection circuit, and apparatus | Kouichi Matsuda, Mitsuo Saeki | 2003-05-20 |
| 6498459 | Electronic equipment and battery unit | Masafumi Okumura | 2002-12-24 |
| 6492791 | Protection method, control circuit, and battery unit | Mitsuo Saeki, Masafumi Okumura, Shigeo Tanaka | 2002-12-10 |
| 6486635 | Monitor signal output circuit, battery pack, battery voltage monitor circuit, battery system, apparatus, battery voltage monitor method, and battery voltage monitor program storage medium | Kouichi Matsuda, Nakazawa Shigeaki, Mitsuo Saeki | 2002-11-26 |
| 6465984 | Pseudo battery pack, battery pack, electronic apparatus, and electronic apparatus system and method | Kazuhito Fukuoka, Nobuo Tanaka | 2002-10-15 |
| 6452364 | Battery charge control circuit, battery charging device, and battery charge control method | Mitsuo Saeki, Seiya Kitagawa, Toshiyuki Matsuyama | 2002-09-17 |
| 6420858 | DC-to-DC converter circuit having a power saving mode | Seiya Kitagawa, Toshiyuki Matsuyama | 2002-07-16 |
| 6414403 | Power unit | Seiya Kitagawa, Mitsuo Saeki | 2002-07-02 |
| 6404076 | DC-DC converter circuit selecting lowest acceptable input source | Kouichi Matsuda, Mitsuo Saeki | 2002-06-11 |
| 6366475 | Power control method and circuit, and power supply unit | Shigeaki Nakazawa, Hidetoshi Yano, Shigeo Tanaka | 2002-04-02 |
| 6262494 | Battery unit and information processing system having battery unit mounted therein | Toshiaki Tsukuni, Yoshiro Takeda, Mitsuo Saeki | 2001-07-17 |
| 6204648 | DC-to-DC converter capable of preventing overvoltage | Mitsuo Saeki, Hidetoshi Yano | 2001-03-20 |
| 6194875 | Controller for DC-DC converter | Kyuichi Takimoto, Toshiyuki Matsuyama, Seiya Kitagawa | 2001-02-27 |