Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8975550 | Switch unit and switchgear | Daisuke Sugai, Takashi Sato, Tomoaki Utsumi, Kazuhiro Satou, Takafumi Hosono | 2015-03-10 |
| 8710388 | Switchgear and method for operating switchgear | Tomoaki Utsumi, Takashi Sato, Kenji Tsuchiya, Ayumu Morita | 2014-04-29 |
| 7244903 | Vacuum switchgear | Tomoaki Utsumi, Kazuhiro Satou, Kenji Tsuchiya, Masato Kobayashi | 2007-07-17 |
| 6884940 | Vacuum switchgear | Tomoaki Utsumi, Kazuhiro Satou, Kenji Tsuchiya, Masato Kobayashi | 2005-04-26 |
| 6859124 | Gas insulation transformer | Akira Nishimizu, Youichi Amako, Takahide Matsuo, Noriyuki Hayashi | 2005-02-22 |
| 5669228 | System for utilizing exhaust heat of stationary induction apparatus | Takashi Iga, Kaoru Endou, Yoshito Uwano | 1997-09-23 |