Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6646861 | Gas insulated switchgear | Hiroyasu Watanabe, Rei Henmi, Ryouichi Mitsugi, Shunji Ito | 2003-11-11 |
| 6424162 | Insulated device diagnosing system that prepares detection data from partial discharge signal such that periodic elements are given to different specific frequencies of the partial discharge signal | Toshiaki Rokunohe, Fumihiro Endo, Tokio Yamagiwa | 2002-07-23 |
| 5982181 | Insulated device diagnosing system for diagnosing device based upon partial discharge signal data analyzed by frequency | Toshiaki Rokunohe, Fumihiro Endo, Tokio Yamagiwa | 1999-11-09 |