Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5821496 | Method of controlling transient recovery voltage and gas insulation switch gear using the same | Eisaku Mizufune, Takashi Sato, Katsuichi Kashimura, Osamu Koyanagi, Yukio Korosawa | 1998-10-13 |
| 5814781 | Puffer type gas circuit breaker | Osamu Koyanagi, Kastuichi Kashimura, Yukio Kurosawa, Goro Daimon, Kenji Tsuchiya +2 more | 1998-09-29 |
| 5793597 | Puffer type gas breaker | Eisaku Mizufune, Yukio Kurosawa, Katsuichi Kashimura, Osamu Koyanagi, Kogi Ishikawa +5 more | 1998-08-11 |
| 5610381 | Compression gas puffer type circuit breaker | Eisaku Mizufune, Kenichi Natsui, Yukio Kurosawa, Goro Daimon, Katsuichi Kashimura +2 more | 1997-03-11 |
| 5473494 | Electrical power supply system | Yukio Kurosawa, Youichi Ohshita, Masaru Watanabe, Isao Nishida, Tokio Yamagiwa | 1995-12-05 |
| 4788392 | Tank type gas circuit breaker | — | 1988-11-29 |
| 4236053 | Puffer type gas circuit breaker | Koji Sasaki | 1980-11-25 |