Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7254507 | Analog circuit automatic calibration system | Shiro Dosho, Naoshi Yanagisawa, Keijiro Umehara | 2007-08-07 |
| 7030688 | Low-pass filter for a PLL, phase-locked loop and semiconductor integrated circuit | Shiro Dosho, Naoshi Yanagisawa, Keijiro Umehara, Masahiro Fukui, Takefumi Yoshikawa +3 more | 2006-04-18 |
| 6982581 | Duty cycle correction circuit | Shiro Dosho, Naoshi Yanagisawa, Keijiro Umehara | 2006-01-03 |
| 6825712 | Filter circuit, front end of communication system including the filter circuit, and communication device including the same | Shiro Dosho, Takashi Morie, Hitoshi Kobayashi, Norihide Kinugasa | 2004-11-30 |
| 6603219 | Semiconductor integrated circuit | Shiro Dosho, Naoshi Yanagisawa | 2003-08-05 |
| 6407642 | Frequency detector and phase-locked loop circuit including the detector | Shiro Dosho, Naoshi Yanagisawa | 2002-06-18 |