Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6838960 | Circuit breaker | Koji Asakawa, Hisao Kawato, Yasutoshi Ide, Hideto Yamagata | 2005-01-04 |
| 5886606 | Circuit breaker | Hiroaki Tosaka, Koji Nomura | 1999-03-23 |
| 5569894 | Circuit breaker arc quenching device with venting structure including flapper valve | Naoshi Uchida, Masao Miura, Jun Oyama, Koji Asakawa | 1996-10-29 |
| 4935589 | Arc extinction chamber unit in a multipolar circuit breaker | — | 1990-06-19 |
| 4635012 | Contactor structure of circuit breaker | Kiyoshi Kandatsu | 1987-01-06 |