Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9302343 | Process for spot-joining stacked metal foils | Masaki Kumagai, Hideki Okada, Kenji Hayafuji | 2016-04-05 |
| 8803035 | Equalizing mechanism of welding apparatus | Yoshio Sato, Shinichi Kurihara, Kenji Hayafuji, Tsuneaki Sudo | 2014-08-12 |
| 8253305 | Drive unit of pressure device | Yoshio Sato, Tsuneaki Sudo, Shinichi Kurihara | 2012-08-28 |