Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9131563 | Light-emitting diode driving apparatus and semiconductor device | — | 2015-09-08 |
| 9131568 | Light-emitting diode driving apparatus and semiconductor device | — | 2015-09-08 |
| 8242765 | Switching power supply device and semiconductor device used for the same | — | 2012-08-14 |
| 8120343 | Switching power supply and semiconductor device used for the same | — | 2012-02-21 |
| 7919818 | Semiconductor device | Saichiro Kaneko | 2011-04-05 |
| 7834828 | Led driving semiconductor apparatus provided with controller including regulator and drain current detector of switching element block | Ryutaro Arakawa, Yoshiaki Hachiya, Minoru Fukui | 2010-11-16 |
| 7830097 | Semiconductor circuit for driving light emitting diode, and light emitting diode driving apparatus | — | 2010-11-09 |
| 7638954 | Light emitting diode drive apparatus | Ryutaro Arakawa, Yoshiaki Hachiya, Minoru Fukui | 2009-12-29 |
| 7508254 | Reference supply voltage circuit using more than two reference supply voltages | Yoshiaki Hachiya, Ryutaro Arakawa, Minoru Fukui | 2009-03-24 |
| 7439719 | Switching control circuit with off period adjustment | Yoshiaki Hachiya, Ryutarou Arakawa, Minoru Fukui | 2008-10-21 |
| 7348766 | Switching power supply device | Yoshiaki Hachiya, Ryutaro Arakawa, Minoru Fukui | 2008-03-25 |
| 7145223 | Semiconductor device | Minoru Fukui | 2006-12-05 |