Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7834828 | Led driving semiconductor apparatus provided with controller including regulator and drain current detector of switching element block | Yoshiaki Hachiya, Takashi Kunimatsu, Minoru Fukui | 2010-11-16 |
| 7638954 | Light emitting diode drive apparatus | Takashi Kunimatsu, Yoshiaki Hachiya, Minoru Fukui | 2009-12-29 |
| 7508254 | Reference supply voltage circuit using more than two reference supply voltages | Yoshiaki Hachiya, Takashi Kunimatsu, Minoru Fukui | 2009-03-24 |
| 7348766 | Switching power supply device | Yoshiaki Hachiya, Minoru Fukui, Takashi Kunimatsu | 2008-03-25 |
| 7115888 | LED driving semiconductor circuit and LED driving apparatus including the same | Yoshiaki Hachiya | 2006-10-03 |
| 6021058 | PWM inverter with zero dead time and initial power supply capacitor charging | Masahiro Yasohara, Yasushi Kato, Shinichi Emura, Kazuyuki Takada, Yuji Tanaka +1 more | 2000-02-01 |
| 5061990 | Semiconductor device and the manufacture thereof | Sunao Fukutake | 1991-10-29 |
| 4962415 | IC card | Hiroshi Yamamoto, Akio Anada | 1990-10-09 |