Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6845301 | System for protecting and controlling substation main circuit components | Koichi Hamamatsu, Tokuo Ito, Yoshito Sameda, Toshiyuki Saida, Noriyoshi Suga +9 more | 2005-01-18 |
| 6678134 | Digital protective relay system | Hideaki Sugiura, Itsuo Shuto, Masamichi Saga | 2004-01-13 |
| 4709295 | Digital protective relay system | Mitsuru Yamaura, Junichi Inagaki | 1987-11-24 |