Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5402297 | Commutating type DC circuit breaker arrangement | Shigetoshi Ouchi, Haruo Honda, Toru Yoshida, Yukio Kugoh, Fumihisa Ichikawa +2 more | 1995-03-28 |
| 4547639 | Vacuum circuit breaker | Ryuji Watanabe, Kiyoji Iwashita, Sadami Tomita, Keiichi Kuniya | 1985-10-15 |
| 4430536 | Vacuum interrupter | Yukio Kurosawa, Akira Wada, Kiyoji Iwashita | 1984-02-07 |