Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12316127 | Power conversion device | Yuki Kudo, Koji TOBA, Shunsuke KAWACHI, Yukina AKIYAMA | 2025-05-27 |
| 12107716 | Stored power production source management device, method, and storage medium | Masato Shibuya, Mitsuru Kanda, Yuzuru Kurihara, Yoshiaki Ohsako, Chikara Takashima | 2024-10-01 |
| 9054778 | Transmission line protective relay device | — | 2015-06-09 |
| 8861153 | Current differential replay apparatus | — | 2014-10-14 |
| 7233470 | Distance relay apparatus | Hidenari Amo, Tetsuo Matsushima | 2007-06-19 |
| 7106565 | Directional ground relay system | Yasutaka Sonobe, Hidenari Amo | 2006-09-12 |
| 6989977 | Digital directional relay | Hidenari Amo, Yasutaka Sonobe | 2006-01-24 |
| 6937453 | Directional comparison distance relay system | Hidenari Amo, Yasutaka Sonobe | 2005-08-30 |
| 6873508 | Protective relay system | Hidenari Amo, Yasutaka Sonobe | 2005-03-29 |