Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8982519 | Current differential relay and current differential relay system using current differential relay thereof | Koichi Okuno | 2015-03-17 |
| 8396098 | Digital protective relay device and data transmission device for the same | Kazuto Fukushima, Hideaki Sugiura | 2013-03-12 |
| 8218278 | Current differential relay device, signal processing method thereof and power transmission line protection system | Itsuo Shuto, Mitsuaki Mizunoue | 2012-07-10 |
| 6714148 | Digital protective relay | Itsuo Shuto | 2004-03-30 |
| 6678134 | Digital protective relay system | Hideaki Sugiura, Itsuo Shuto, Hachidai Ito | 2004-01-13 |