Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4764746 | Circuit breaker | Takeyasu Katou, Mitsuaki Sakakibara | 1988-08-16 |
| 4716392 | Power supply switch | Hiroyuki Onishi | 1987-12-29 |
| 4514709 | Circuit breaker | Takaaki Chuzawa, Masaru Ohmuro | 1985-04-30 |
| 4393287 | Arc suppressing means for current limiting circuit breakers | — | 1983-07-12 |
| 4342974 | Multipolar type circuit breaker | Kunio Takemura | 1982-08-03 |