Issued Patents All Time
Showing 26–44 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9590511 | Insulation type switching power source apparatus | — | 2017-03-07 |
| 9577511 | PFC DC/AC/DC power converter with reduced power loss | Hiroshi Hayashi | 2017-02-21 |
| 9419540 | Switching power supply circuit | — | 2016-08-16 |
| 9413251 | Power delivery device, AC adapter, electronic apparatus and power delivery system, having variable function of output voltage value and available output current capacity | Akihiro Ono, Isao Yamamoto | 2016-08-09 |
| 9252669 | AC/DC converter, and AC power adapter and electronic apparatus using the same | Hiroshi Hayashi | 2016-02-02 |
| 9252675 | Power delivery device, AC adapter, and electronic apparatus each having variable function of output power | Akihiro Ono | 2016-02-02 |
| 9231483 | DC/DC converter | — | 2016-01-05 |
| 9190916 | DC/DC converter, control circuit and control method thereof, power supply, power adapter and electronic apparatus using the same | Yoshinori Sato | 2015-11-17 |
| 9124184 | DC/DC converter | Yoshinori Sato | 2015-09-01 |
| 9112419 | AC/DC converter with control circuit that receives rectified voltage at input detection terminal | — | 2015-08-18 |
| 8971076 | Power factor correction circuit | Yoshinori Sato | 2015-03-03 |
| 8942016 | Power supply apparatus | Hiroshi Hayashi | 2015-01-27 |
| 8837181 | Step down switching regulator | Hiroshi Hayashi, Yoshinori Sato | 2014-09-16 |
| 8724346 | DC/DC converter, and power supply and electronic device using the same | — | 2014-05-13 |
| 8717781 | Direct current/direct current converter, and power supply apparatus and electronic device using the same | — | 2014-05-06 |
| 8134106 | Current detection circuit | Yoichi Tamegai, Isao Yamamoto | 2012-03-13 |
| 7898217 | Charge control circuit | Isao Yamamoto | 2011-03-01 |
| 7894717 | Control circuit for self exciting DC/DC converter | Yoichi Tamegai, Isao Yamamoto | 2011-02-22 |
| 7821233 | Charging circuit | Isao Yamamoto, Sachito Horiuchi | 2010-10-26 |