Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7339132 | Method of current interruption using puffer type gas circuit breaker with combined-action of cylinder and piston | Hajime Urai, Makoto Koizumi, Naoki Osawa, Hiroaki Hashimoto, Junzo Kida | 2008-03-04 |
| 6333715 | Partial discharge detector of gas-insulated apparatus | Tatsuro Kato | 2001-12-25 |
| 6005213 | Insulated type switchgear device | Ayumu Morita, Takashi Sato, Tooru Tanimizu, Masayoshi Hayakawa, Toshio Horikoshi +1 more | 1999-12-21 |
| 5952636 | Vacuum type switch gear device having L shaped stationary and movable conductors arrangement | Ayumu Morita, Takashi Sato, Tooru Tanimizu, Masayoshi Hayakawa, Toshio Horikoshi +1 more | 1999-09-14 |
| 5850065 | Gas circuit breaker | Noriyuki Yaginuma, Masanori Tsukushi, Makoto Yano, Katsuhiko Shiraishi | 1998-12-15 |
| 5837955 | Gas circuit breaker | Tomoaki Utsumi, Jun Nukaga, Goro Daimon, Kenji Tsuchiya, Hiroshi Yoshimoto | 1998-11-17 |
| 5777842 | Transformer station and breaker apparatus | Masanori Tsukushi, Ken'ichi Natsui, Yuzuru Kamata, Makoto Yano, Noriyuki Yaginuma +1 more | 1998-07-07 |
| 5543597 | Grounding switch gear device | Atsuji Watanabe, Masatomo Ohno, Masanori Tsukushi, Shunji Tokuyama | 1996-08-06 |
| 5502290 | Switch mechanism | Osamu Koyanagi, Kunio Hirasawa, Masanori Tsukushi, Yukio Kurosawa, Tadashi Sato | 1996-03-26 |
| 5473494 | Electrical power supply system | Yukio Kurosawa, Masaru Watanabe, Isao Nishida, Yoshihito Asai, Tokio Yamagiwa | 1995-12-05 |
| 5391930 | Circuit breaker with parallel resistor | Katuichi Kashimura, Akira Hashimoto, Osamu Koyanagi, Yukio Kurosawa, Isao Nishida | 1995-02-21 |
| 5214595 | Abnormality diagnosing system and method for a high voltage power apparatus | Jun Ozawa, Fumihiro Endo, Izumi Yamada, Tokio Yamagiwa, Hiroshi Yamada +2 more | 1993-05-25 |
| 5155312 | Puffer type gas circuit interrupter | Akira Hashimoto, Kogi Ishikawa, Masanori Tsukushi, Yukio Kurosawa | 1992-10-13 |
| 5107447 | Abnormality diagnosing system and method for a high voltage power apparatus | Jun Ozawa, Fumihiro Endo, Izumi Yamada, Tokio Yamagiwa, Hiroshi Yamada +2 more | 1992-04-21 |
| 4865709 | Magnetron sputter apparatus and method for forming films by using the same apparatus | Yukio Nakagawa, Ken-ichi Natsui, Tadashi Sato, Eiji Setoyama, Mitsuhiro Kamei | 1989-09-12 |
| 4864286 | Switch operation monitoring apparatus | Akira Hashimoto, Masanori Tsukushi, Yukio Kurosawa, Kiyoshi Okumura | 1989-09-05 |
| 4716491 | High frequency plasma generation apparatus | Yasunori Ohno, Tomoe Kurosawa, Tadashi Sato | 1987-12-29 |
| 4673482 | Sputtering apparatus | Eiji Setoyama, Keiji Arimatsu | 1987-06-16 |
| 4423298 | Gas circuit breaker of resistance breaking type | Masanori Tsukushi, Kunio Hirasawa, Takeshi Takahashi | 1983-12-27 |