Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8189325 | Switchgear | Kenji Tsuchiya, Naoki Nakatsugawa, Takumi Ishikawa, Nobuyuki Yamada | 2012-05-29 |
| 8045322 | Solid insulated bus switchgear | Kenji Tsuchiya, Takumi Ishikawa, Naoki Nakatsugawa | 2011-10-25 |
| 8008594 | Vacuum insulated switchgear | Kenji Tsuchiya, Daisuke Sugai | 2011-08-30 |
| 7983023 | Earthing equipment for switchgear | Kenichi Shoda, Kenji Tsuchiya, Takumi Ishikawa, Naoki Nakatsugawa | 2011-07-19 |
| 7425687 | Vacuum insulated switchgear | Ayumu Morita, Kenji Tsuchiya, Masato Kobayashi | 2008-09-16 |