Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7294166 | Metal-graphite brush | Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita, Kyoji Inukai, Youichi Murakami +2 more | 2007-11-13 |
| 7067951 | Copper-graphite brush | Masakiyo Shimada, Hirotada Kanagawa, Yukinobu Isoda, Kyoji Inukai, Youichi Murakami +3 more | 2006-06-27 |
| 6949863 | Metal-graphite brush | Osamu Takada, Toshio Ishikawa, Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita +4 more | 2005-09-27 |
| 6758881 | Metal-graphite brush and production method thereof | Osamu Takada, Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita, Takahiro Sakamoto +5 more | 2004-07-06 |
| 6755882 | Metal-graphite brush | Toshio Ishikawa, Mitsuo Ikeda, Yoichi Sakaura, Naoki Morita | 2004-06-29 |
| 6700292 | Metal-graphite brush | Mitsuo Ikeda, Yoichi Sakaura, Takahiro Sakamoto, Youichi Murakami, Kyoji Inukai +2 more | 2004-03-02 |