Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10167378 | Processing device and processing method of fiber containing resin | Hiroshi Urayama, Takahiro Takeuchi, Keiichiro Oshima | 2019-01-01 |
| 9223334 | Constant current circuit and light emitting diode driving device using the same | — | 2015-12-29 |
| 8901902 | Switching regulator and electronic device incorporating same | — | 2014-12-02 |
| 8860391 | DC-DC converter, and power supply circuit having DC-DC converter | — | 2014-10-14 |
| 8829878 | Switching regulator and electronic device incorporating same | — | 2014-09-09 |
| 8802272 | Method of producing polyolefin microporous membrane and separator for lithium ion battery | — | 2014-08-12 |
| 8502417 | Power source device and output voltage changing method of the power source device | — | 2013-08-06 |
| 8502508 | Switching regulator circuit configured to perform step up and step down operations and operation method therefor | — | 2013-08-06 |
| 8482267 | Variable voltage DC-DC converter | — | 2013-07-09 |
| 8471548 | Power supply circuit configured to supply stabilized output voltage by avoiding offset voltage in error amplifier | — | 2013-06-25 |
| 8362755 | Current-mode control type DC-DC converter and control method therefor | — | 2013-01-29 |
| 8278901 | Switching regulator configured to detect, and compensate for, decrease in output voltage | — | 2012-10-02 |
| 8154267 | Current mode control type switching regulator | — | 2012-04-10 |
| 8129977 | Reference voltage generating circuit and DC-DC converter including the same | — | 2012-03-06 |
| 8054052 | Constant voltage circuit | — | 2011-11-08 |
| 8008889 | Charging circuit for secondary battery, power supply switching method in charging circuit for secondary battery, and power supply unit | — | 2011-08-30 |
| 7956676 | Semiconductor apparatus | — | 2011-06-07 |
| 7936158 | Switching regulator configured to detect and shutdown reverse current | — | 2011-05-03 |
| 7928687 | Charging circuit, method of controlling operation of charging circuit, and power supply unit | — | 2011-04-19 |
| 7733068 | DC-DC converter | — | 2010-06-08 |
| 7705573 | Constant voltage circuit | — | 2010-04-27 |
| 7679353 | Constant-current circuit and light-emitting diode drive device therewith | — | 2010-03-16 |
| 7622901 | System power supply apparatus and operational control method | — | 2009-11-24 |
| 7576574 | Constant current circuit and light emitting diode drive circuit | — | 2009-08-18 |
| 7535212 | Constant-current circuit and system power source using this constant-current circuit | — | 2009-05-19 |