Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7233470 | Distance relay apparatus | Takahiro Kase, Hidenari Amo | 2007-06-19 |
| 6498709 | Digital distance relay | Yasuhiro Kurosawa, Hidenari Amo, Hiroshi Saito | 2002-12-24 |
| 5786699 | Test method and apparatus for testing a protective relay system | Yukio Sukegawa | 1998-07-28 |
| 5666060 | Test method and apparatus for testing a protective relay system | Yukio Sukegawa | 1997-09-09 |
| 5576625 | Test method and apparatus for testing a protective relay system | Yukio Sukegawa | 1996-11-19 |
| 4857854 | Digital fault locator | — | 1989-08-15 |
| 4357666 | Digital distance relays | Ryotaro Kondow, Kunio Matsuzawa | 1982-11-02 |
| 4344143 | Digital type distance relay system | Yasuhiro Kurosawa | 1982-08-10 |
| 4333151 | Method for protecting an electric power system and digital protective system | — | 1982-06-01 |
| 4212046 | Distance relaying systems | Fumio Andow, Eiichi Okamoto | 1980-07-08 |