Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5734140 | Gas insulated high voltage circuit breaker including tulip contact assembly and insertion resistor | Hiromichi Hokuto, Masatomo Ohno, Manabu Takamoto, Hideo Kawamoto | 1998-03-31 |
| 5661282 | Gas insulated circuit breaker | Kenji Tsuchiya, Goro Daimon, Yuuichirou Yamane | 1997-08-26 |
| 5563459 | Apparatus for controlling opening and closing timings of a switching device in an electric power system | Yukio Kurosawa, Hiroshi Arita, Tadashi Sato | 1996-10-08 |
| 5502290 | Switch mechanism | Osamu Koyanagi, Masanori Tsukushi, Yukio Kurosawa, Tadashi Sato, Youichi Ohshita | 1996-03-26 |
| 5327355 | Voltage or reactive power control method and control device therefor | Tomio Chiba, Mitsuyasu Kido, Junzo Kawakami, Yoshiaki Matsui | 1994-07-05 |
| 5274205 | Gas blast, puffer type circuit breaker with improved nozzle | Masanori Tsukushi, Akira Hashimoto, Minori Satoh, Yukio Kurosawa, Fumihiro Endo +1 more | 1993-12-28 |
| 5153518 | Synthetic equivalent test circuit of circuit breaker | Minori Satoh, Isao Takahashi, Yukio Kurosawa, Kastuichi Kashimura | 1992-10-06 |
| 4847476 | Ion source device | Tadashi Sato, Yasunori Ohno, Tomoe Kurosawa, Nobuya Sekimoto, Yoshimi Hakamata +1 more | 1989-07-11 |
| 4739169 | Ion source | Yukio Kurosawa, Yoshimi Hakamata, Yasunori Ohno, Tadashi Sato | 1988-04-19 |
| 4578730 | High-voltage DC circuit breaker apparatus | Shunji Tokuyama, Kooji Suzuki, Yoshio Yoshioka, Keiji Arimatsu | 1986-03-25 |
| 4562322 | SF.sub.6 Gas arc extinguishing electric apparatus and process for producing the same | Motoo Yamaguchi, Isamu Sone, Yoshio Yoshioka, Akio Nishikawa, Hiroshi Suzuki +2 more | 1985-12-31 |
| 4442330 | Puffer type current interrupter | Youichi Oshita, Shunji Sato, Takeshi Takahashi | 1984-04-10 |
| 4423298 | Gas circuit breaker of resistance breaking type | Masanori Tsukushi, Youichi Ohshita, Takeshi Takahashi | 1983-12-27 |
| 4239948 | Grounded support tank type gas circuit breaker | Masanori Tsukushi, Katsuichi Kashimura | 1980-12-16 |
| 4211903 | Electromagnetic puffer type gas circuit breaker | Masanori Tsukushi, Katsuichi Kashimura, Osamu Koyanagi, Yoshio Yoshioka | 1980-07-08 |