Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5543597 | Grounding switch gear device | Atsuji Watanabe, Youichi Ohshita, Masatomo Ohno, Masanori Tsukushi | 1996-08-06 |
| 4618905 | DC circuit breaker | Koji Suzuki, Keiji Arimatsu | 1986-10-21 |
| 4578730 | High-voltage DC circuit breaker apparatus | Kooji Suzuki, Kunio Hirasawa, Yoshio Yoshioka, Keiji Arimatsu | 1986-03-25 |
| 4216513 | D.C. Circuit breaker | Hiroyuki Sugawara | 1980-08-05 |