Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7106565 | Directional ground relay system | Takahiro Kase, Hidenari Amo | 2006-09-12 |
| 6989977 | Digital directional relay | Takahiro Kase, Hidenari Amo | 2006-01-24 |
| 6937453 | Directional comparison distance relay system | Takahiro Kase, Hidenari Amo | 2005-08-30 |
| 6873508 | Protective relay system | Takahiro Kase, Hidenari Amo | 2005-03-29 |