Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5814781 | Puffer type gas circuit breaker | Osamu Koyanagi, Yoshihito Asai, Yukio Kurosawa, Goro Daimon, Kenji Tsuchiya +2 more | 1998-09-29 |
| 5153518 | Synthetic equivalent test circuit of circuit breaker | Minori Satoh, Isao Takahashi, Yukio Kurosawa, Kunio Hirasawa | 1992-10-06 |
| 5039831 | Circuit breaker | Minori Sato, Masanori Tsukushi, Yukio Kurosawa, Kazuhiro Saito, Osamu Koyanagi +1 more | 1991-08-13 |