Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6839597 | State-of-device remote monitoring system | Takayuki Hattori, Riichiro Tsutsumi | 2005-01-04 |
| 6496391 | Power supply unit utilizing a current transformer | Takayuki Hattori | 2002-12-17 |