Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6758881 | Metal-graphite brush and production method thereof | Takayoshi Otani, Osamu Takada, Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita +5 more | 2004-07-06 |
| 6700292 | Metal-graphite brush | Takayoshi Otani, Mitsuo Ikeda, Yoichi Sakaura, Youichi Murakami, Kyoji Inukai +2 more | 2004-03-02 |