Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8659858 | Ground-fault detecting device, current collecting box using the ground-fault detecting device, and photovoltaic power generating device using the current collecting box | Shuhei Nishikawa, Tsuyoshi Sekine | 2014-02-25 |
| 8461716 | Photovoltaic power generating device, and controlling method | Shuhei Nishikawa, Tsuyoshi Sekine | 2013-06-11 |
| 6781802 | Controlling device of compressor | Hideaki Kato, Tetsuo Nomoto, Yuichi Izawa, Yasuhiro Makino, Kazuhisa Otagaki | 2004-08-24 |