Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6621009 | Electrical conductor support insulator | Aiichiro Hashizume, Junichiro Nishitani, Masahiro Arioka, Masaaki Takeshita | 2003-09-16 |
| 5723836 | Operation mechanism of circuit breaker | Coichi Shichida | 1998-03-03 |
| 4839476 | Switch operating mechanism | — | 1989-06-13 |
| 4810840 | Dead tank circuit breaker | — | 1989-03-07 |
| 4749831 | Dead tank type gas circuit breaker | Mamoru Hosomi | 1988-06-07 |
| 4652708 | Tank-type switchgear | Tsutomu Sugiyama | 1987-03-24 |
| 4412115 | Circuit interrupter | — | 1983-10-25 |