Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5837954 | Circuit breaker | Koji Asakawa, Kyoji Hama | 1998-11-17 |
| 5834724 | Circuit breaker with grid support mounted over stationary contactor | Koji Asakawa, Kyoji Hama | 1998-11-10 |
| RE35507 | Repulsion type circuit breaker control device | Kouji Asakawa, Jun Oyama | 1997-05-13 |
| 5589672 | Circuit breaker with arc quenching device and vent | Masao Miura, Jun Oyama, Katsunori Kuboyama, Koji Asakawa | 1996-12-31 |
| 5581219 | Circuit breaker | Eiji Nozawa, Masao Miura, Tsuneo Ebisawa | 1996-12-03 |
| 5569894 | Circuit breaker arc quenching device with venting structure including flapper valve | Akihiko Kohanawa, Masao Miura, Jun Oyama, Koji Asakawa | 1996-10-29 |
| 5566818 | Movable contactor device in circuit breaker | Katsunori Kuboyama | 1996-10-22 |
| 5548258 | Circuit breaker with insulation device | Katsunori Kuboyama, Koji Asakawa | 1996-08-20 |
| 5199553 | Sliding contactor for electric equipment | Hisaji Shinohara, Kiyoshi Kandatsu, Soujun Matsumura, Tadashi Chiba, Shigeharu Miyazaki | 1993-04-06 |
| 5184100 | Circuit breaker | Jun Oyama | 1993-02-02 |
| 5164560 | Repulsion type circuit breaker control device | Kouji Asakawa, Jun Oyama | 1992-11-17 |
| 5082996 | Switching mechanism in circuit breaker | Tatsunori Takahashi, Makoto Unuma | 1992-01-21 |
| 5025236 | Circuit breaker | Masao Miura, Tatsunori Takahashi, Kouji Asakawa, Eiji Nozawa | 1991-06-18 |
| 5023416 | Circuit breaker | Jun Oyama, Makoto Unuma, Tatsunori Takahashi, Hisaji Shinohara, Kiyoshi Kandatsu | 1991-06-11 |
| 4884049 | Circuit breaker overcurrent tripping device | Jun Oyama | 1989-11-28 |
| 4622444 | Circuit breaker housing and attachment box | Kiyoshi Kandatsu, Nobuo Asahi | 1986-11-11 |
| 4600908 | Circuit breaker | Kiyoshi Kandatsu | 1986-07-15 |