Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11764532 | Metal graphite grounding brush mainly composed of silver and method for producing same | Mitsuo Ikeda, Mitsuhiro Hirota, Yoshihiro Nishimura | 2023-09-19 |
| 7067951 | Copper-graphite brush | Takayoshi Otani, Masakiyo Shimada, Yukinobu Isoda, Kyoji Inukai, Youichi Murakami +3 more | 2006-06-27 |