Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9837905 | Switching power supply circuit having a switching element and a free-wheeling element and adapted to turn on or off at least the switching element | — | 2017-12-05 |
| 9829901 | Reference voltage generation circuit | Kenichi Watanabe | 2017-11-28 |
| 8659274 | Switching power supply circuit in a synchronous rectification mode for alternately turning on and off a main switching element and a subordinate switching element | — | 2014-02-25 |
| 8513936 | Switching power supply circuit | — | 2013-08-20 |
| 8143873 | Step-up switching power supply circuit | — | 2012-03-27 |
| 7675276 | DC/DC converter | Satoru Ohkawa, Takeshi Naka | 2010-03-09 |
| 7638994 | Switching power supply circuit | Takeshi Naka | 2009-12-29 |
| 7579820 | PWM/PFM control circuit and switching power supply circuit | — | 2009-08-25 |
| 7545129 | Switching power supply circuit | Takeshi Naka | 2009-06-09 |
| 7135844 | Control circuit for DC/DC converter | Satoru Ohkawa, Takeshi Naka | 2006-11-14 |