Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10566941 | Integrated circuit and method of manufacturing integrated circuit | Naohiro Nomura, Kunihiko Iwamoto | 2020-02-18 |
| 10554179 | Differential circuit | Naohiro Nomura, Kunihiko Iwamoto, Takatoshi Manabe | 2020-02-04 |
| 9935543 | Digital control power circuit, control circuit thereof, control method, and electronic device using the same | Hiroyuki Kumasaka, Nobuyuki Suzukawa, Yoshihisa Sakano | 2018-04-03 |
| 9899974 | Chopper stabilized amplifier | Naohiro Nomura | 2018-02-20 |
| 8149042 | Analog switch for signal swinging between positive and negative voltages | Hironori Nakahara | 2012-04-03 |
| 7821233 | Charging circuit | Satoru Nate, Isao Yamamoto | 2010-10-26 |
| 6949892 | Light emitting element drive device and electronic device light emitting element | Noboru Kagemoto, Isao Yamamoto | 2005-09-27 |
| 6822403 | Light emitting element drive device and electronic device having light emitting element | Ken Hoshino, Isao Yamamoto | 2004-11-23 |
| 6400211 | DC/DC converter | Ichiro Yokomizo, Mayuka Matsumae | 2002-06-04 |
| 6025824 | Piezoelectric transformer driving circuit and cold cathode tube illuminating device using the same | Eiji Nakagawa, Masanori Fujisawa, Shingo Kawashima | 2000-02-15 |
| 5939840 | Liquid crystal back light illuminating device and liquid crystal display device | Eiji Nakagawa | 1999-08-17 |
| 5886475 | EL element driving circuit and EL element lighting device using the same | Hiroyuki Ishikawa | 1999-03-23 |
| 5808458 | Regulated power supply circuit | Masanori Fujisawa, Kengo Adachi | 1998-09-15 |
| 5770973 | Semiconductor device for amplifying audio signals | Masanori Fujisawa, Eiji Nakagawa | 1998-06-23 |
| 5696871 | DC motor control circuit | Michiaki Yama | 1997-12-09 |
| 5659241 | DC/DC converter and audio device incorporating the same | Kengo Adachi, Hiroaki Ando | 1997-08-19 |
| 5565762 | DC/DC converter and audio device incorporating the same | Hiroyuki Ishikawa | 1996-10-15 |
| 5121011 | Driver circuit for driving an analog device | Eiji Ohya, Toshio Hanazawa | 1992-06-09 |