Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879509 | Zero-phase-sequence voltage sensing apparatus | Taro Sometani, Naotoshi Takaoka, Mitsuo Aida, Yasuhiro Tanahashi, Katsunori Aoki | 1989-11-07 |
| 4804922 | Voltage sensor | Taro Sometani, Naotoshi Takaoka, Mitsuo Aida, Yasuhiro Tanahashi, Katsunori Aoki | 1989-02-14 |
| 4593276 | Overcurrent display device | Mitsuo Aida, Toshiyuki Adachi | 1986-06-03 |
| 4559530 | Overcurrent condition display | Masao Ishigure, Mitsuo Ota, Naotoshi Takaoka | 1985-12-17 |