Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6004377 | System for collecting and refining SF.sub.6 gas and method therefor | Shin Tamata, Akio Nadamura, Koji Ito, Toshio Ohi, Hiromoto Ohno | 1999-12-21 |
| 5783791 | Gas insulated interrupter | Wataru Tamura | 1998-07-21 |
| 5231256 | Puffer type gas-insulated circuit breaker | Tokio Yamagiwa, Koji Sasaki, Naoyuki Yamamoto, Koji Kurokawa, Naoki Amano | 1993-07-27 |
| 5140499 | Gas-insulated switching device | Naoki Amano, Yoichiro Koizumi | 1992-08-18 |
| 4417111 | Three-phase combined type circuit breaker | Tuneo Kishi, Yasuhide Takeda, Takeshi Takahashi | 1983-11-22 |