Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8237075 | Vacuum circuit breaker and gas-insulated switchgear using the same | Hiroshi Isoya, Tomotaka Yano | 2012-08-07 |
| 8149077 | Electromagnetic operating device for switch | Tomotaka Yano | 2012-04-03 |
| 7880111 | Switchgear and method of fabricating the same | Naoaki Inoue | 2011-02-01 |
| 7800872 | Switch-state monitoring device | Yasushi Takeuchi | 2010-09-21 |
| 7417846 | Gas-insulated switchgear | — | 2008-08-26 |
| 6927356 | Enclosed switchgear | Shinji Sato, Kenichi Koyama | 2005-08-09 |
| 6865072 | Metal-enclosed switchgear | Shinji Sato, Takao Tsurimoto, Kenichi Koyama | 2005-03-08 |
| 6621009 | Electrical conductor support insulator | Michiharu Okuno, Aiichiro Hashizume, Junichiro Nishitani, Masaaki Takeshita | 2003-09-16 |
| 6559404 | Vacuum circuit interrupter | Yoshihiro Ookawa, Shinichi Miki | 2003-05-06 |
| 6518531 | Gas-insulated switchgear | Junichiro Nishitani | 2003-02-11 |
| 6510046 | Gas-insulated switchgear | Tomotaka Yano | 2003-01-21 |
| 6459567 | Gas-insulated switchgear | Hiroshi Isoya, Takakazu Harada | 2002-10-01 |
| 6445569 | Gas-insulated switchgear | Coichi Shichida | 2002-09-03 |
| 6433998 | Switchgear | Masashi Negawa | 2002-08-13 |
| 6392157 | Device for bus coupling between enclosed switchboards with insulating gas sealed therein | Hiroshi Isoya | 2002-05-21 |