Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5045652 | Disconnector of gas insulated switchgear | Susumu Nishiwaki, Masayuki Ishikawa, Hirokuni Aoyagi | 1991-09-03 |
| 4994932 | Superconducting current limiting apparatus | Masaru Okamoto, Hitoshi Mizoguchi, Masayuki Ishikawa, Hisatoshi Ikeda, Katsumi Suzuki +3 more | 1991-02-19 |
| 4841538 | CO.sub.2 gas laser device | Hideomi Takahashi, Eiji Kaneko, Koichi Yasuoka | 1989-06-20 |
| 4774388 | Compressed dielectric gas circuit breaker | Edmond Thuries, Denis Dufournet, Michel Perret | 1988-09-27 |
| 4754109 | Compressed dielectric gas high-tension circuit breaker | Edmond Thuries, Denis Dufournet, Michel Perret | 1988-06-28 |
| 4743721 | Circuit breaker actuator device | Edmond Thuries, Jean-Paul Masson, Michel Perret | 1988-05-10 |
| 4736078 | Method for processing vacuum switch and vacuum switch processed by the method | Koichi Yasuoka, Tohru Tamagawa, Eiji Kaneko, Mitsutaka Homma, Takumi Funahashi | 1988-04-05 |
| 4698467 | Electrodes of vacuum switch | Eiji Kaneko, Tohoru Tamagawa | 1987-10-06 |
| 4665289 | Puffer type gas insulated circuit breaker | Hitoshi Mizoguchi, Hisatoshi Ikeda, Katsumi Suzuki, Mitsuru Toyoda, Edmond Thuries | 1987-05-12 |
| 4570042 | Gas-insulated switching apparatus | Susumu Nishiwaki, Eiichi Haginomori | 1986-02-11 |
| 4458121 | DC Circuit breaker | Tohoru Tamagawa, Eiji Kaneko, Takumi Funahashi | 1984-07-03 |
| 4454476 | Method of and apparatus for synthetic testing of a multi-break circuit breaker | Akio Kobayashi, Shoji Yamashita | 1984-06-12 |
| 4442469 | DC Circuit breaker apparatus | Tohoru Tamagawa, Takumi Funahashi | 1984-04-10 |
| 4434332 | Hybrid-type interrupting apparatus | Tohoru Tamagawa | 1984-02-28 |
| 4389693 | Lightning arrester | Susumu Nishiwaki, Mizuho Yamashita, Toshikazu Satoh, Yoichi Murakami, Susumu Imai | 1983-06-21 |
| 4367382 | Vacuum circuit breaker | Hideo Suzuki, Nobuo Kawashima, Eiichi Takayanagi | 1983-01-04 |
| 4336414 | Method and apparatus for treating noxious gases | Toshio Suzuki, Junichi Ise, Hitoshi Mizoguchi | 1982-06-22 |
| 4326233 | Lightning arrester | Susumu Nishiwaki, Toshikazu Satoh | 1982-04-20 |
| 4307428 | Circuit breaker apparatus for high voltage direct currents | Toru Tamagawa, Susumu Nishiwaki | 1981-12-22 |
| 4306267 | Arrester | Susumu Nishiwaki, Toshikazu Satoh | 1981-12-15 |
| 4305107 | DC Interrupting apparatus | Minoru Murano, Tohru Tamagawa, Hisatoshi Ikeda | 1981-12-08 |
| 4296288 | Gas insulated disconnecting switches | Hitoshi Mizoguchi, Naoaki Simogawara | 1981-10-20 |
| 4262215 | Direct current interrupter | Tohru Tamagawa, Hisatoshi Ikeda, Hidekiyo Mayama | 1981-04-14 |
| 4246458 | Vacuum interrupter | Tohoru Tamagawa, Shigeo Souma, Takumi Funahashi, Hiroyuki Okumura, Nobuyuki Takahashi | 1981-01-20 |