Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12395165 | Apparatus and methods to control well bias in a semiconductor device | Taewoo Kwak, Benjamin Lee Amey | 2025-08-19 |
| 10425052 | Differential input stages | — | 2019-09-24 |
| 9973152 | Current-limiting in an amplifier system | Keita Ikai | 2018-05-15 |
| 9641066 | Switching regulator circuit/process counting clock cycles after regulator comparator change | Naoyuki Tsuruoka, Keita Ikai, Masaki Yamashita | 2017-05-02 |
| 9495982 | Current-limiting in an amplifier system | Keita Ikai | 2016-11-15 |
| 8963472 | Integration of spindle external sense resistor into servo IC with stable resistance control circuit | Nakoyuki Tsuruoka, Masaki Yamashita | 2015-02-24 |
| 8737012 | System and method for automatic calibration of notch filter of hard disk drive | — | 2014-05-27 |
| 7835096 | Disk-drive write head fault detection | — | 2010-11-16 |