Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4914385 | Current detector | — | 1990-04-03 |
| 4819124 | Overcurrent detector and circuit breaker | — | 1989-04-04 |
| 4819125 | Overcurrent detector | Yoshihiro Hatakeyama | 1989-04-04 |
| 4814935 | Circuit breaker reactive to three time-overcurrent characteristics | Yoshihiro Hatakeyama | 1989-03-21 |
| 4752865 | Power source device for circuit breaker | Yoshihiro Hatakeyama | 1988-06-21 |
| 4695961 | Solid state overcurrent detector | — | 1987-09-22 |