Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5814781 | Puffer type gas circuit breaker | Osamu Koyanagi, Kastuichi Kashimura, Yoshihito Asai, Yukio Kurosawa, Goro Daimon +2 more | 1998-09-29 |
| 5793597 | Puffer type gas breaker | Eisaku Mizufune, Yukio Kurosawa, Katsuichi Kashimura, Osamu Koyanagi, Yoshihito Asai +5 more | 1998-08-11 |
| 5610381 | Compression gas puffer type circuit breaker | Eisaku Mizufune, Kenichi Natsui, Yukio Kurosawa, Goro Daimon, Yoshihito Asai +2 more | 1997-03-11 |
| 5155312 | Puffer type gas circuit interrupter | Akira Hashimoto, Youichi Ohshita, Masanori Tsukushi, Yukio Kurosawa | 1992-10-13 |