Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7367625 | Retractable seats | Masaki Mori, Yoshihiro Ohishi | 2008-05-06 |
| 6924720 | Circuit breaker | Mitsuhiro Mitsushige, Koji Asakawa, Yasuhiro Takahashi, Hideto Yamagata | 2005-08-02 |
| 6469601 | Under-voltage tripping device with early-operation auxiliary switch for circuit breaker | Koji Asakawa | 2002-10-22 |
| 5589672 | Circuit breaker with arc quenching device and vent | Naoshi Uchida, Jun Oyama, Katsunori Kuboyama, Koji Asakawa | 1996-12-31 |
| 5581219 | Circuit breaker | Eiji Nozawa, Naoshi Uchida, Tsuneo Ebisawa | 1996-12-03 |
| 5569894 | Circuit breaker arc quenching device with venting structure including flapper valve | Naoshi Uchida, Akihiko Kohanawa, Jun Oyama, Koji Asakawa | 1996-10-29 |
| 5025236 | Circuit breaker | Naoshi Uchida, Tatsunori Takahashi, Kouji Asakawa, Eiji Nozawa | 1991-06-18 |
| 4849726 | Circuit breaker | Isamu Osima | 1989-07-18 |
| 4820316 | Method of foreseeing break-through in gas adsorbing apparatus | Hisayuki Mizuno, Hiroyuki Fukushima, Mamoru Miyamoto, Kyouhei Ohizumi, Yoshio Nishimura | 1989-04-11 |
| 4490344 | Production process of silicon tetrachloride | Tadashi Iwai, Hisayuki Mizuno | 1984-12-25 |
| 4327062 | Process for producing chloride of elements of Group III, IV or V of Periodic Table | Tadashi Iwai, Hisayuki Mizuno | 1982-04-27 |