Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10608534 | DC/DC converter for providing function of noise countermeasures, control circuit thereof, control method thereof, and electronic apparatus including the DC/DC converter | Osamu Yanagida | 2020-03-31 |
| 10389339 | Device and method for controlling slew rate | Tsutomu Ishino | 2019-08-20 |
| 7884578 | Battery charging circuit with backflow prevention transistor, portable electronic device and semiconductor integrated circuit with backflow prevention transistor | Isao Yamamoto | 2011-02-08 |
| 7876144 | Start-up circuit and start-up method | Akihito Ito, Yoshikazu Sasaki, Isao Yamamoto | 2011-01-25 |
| 7843172 | Battery charging controller and portable electronic device | Isao Yamamoto, Yoshikazu Sasaki | 2010-11-30 |
| 7768247 | Under voltage lock out circuit and method | Yoshikazu Sasaki, Isao Yamamoto | 2010-08-03 |
| 7486064 | Under voltage lock out circuit and method | Yoshikazu Sasaki, Isao Yamamoto | 2009-02-03 |
| 6967469 | Battery charging method, battery charging circuit, and portable electronic device having a battery | Isao Yamamoto, Hiroyuki Ishikawa, Shigekane Matsui | 2005-11-22 |
| 4697885 | Display device and decal for forming a display panel terminal | Toshio Minowa, Kohji Kuroda, Kazutaka Nakayama | 1987-10-06 |