Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831828 | Gas-insulated switchgear | Hirohide Aoki, Takuya Ootsuka, Kouichi Oosumi, Yoshinori Shimizu, Kiyoshi Inami | 2004-12-14 |
| 6717499 | Transformer for gas insulated electric apparatus | Yasuhiro Maeda, Hirohide Aoki | 2004-04-06 |
| 6680665 | Three-phase current transformer | Hirohide Aoki, Yasuhiro Maeda | 2004-01-20 |