Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4772978 | Transformer protection system | Yoshifumi Oura, Kazuyoshi Yoshida, Keizo Inagaki, Hiroyuki Kudo, Yoshihiro Sano | 1988-09-20 |
| 4419737 | Setting device for protective control system | Mitsuru Yamaura, Ryotaro Kondow, Junichi Inagaki | 1983-12-06 |
| 4357666 | Digital distance relays | Tetsuo Matsushima, Ryotaro Kondow | 1982-11-02 |
| 4328551 | Apparatus and method for protection of electric power transmission lines and the like | Mitsuru Yamaura, Ryotaro Kondow | 1982-05-04 |