Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5886601 | Electromagnetic relay assembly | Nobuhiro Kitamura, Naoki Kanemoto, Masahiro Kutsuna, Tetsuyasu Kawamoto | 1999-03-23 |
| 5049845 | Welding free relay contact device | Yoichi Yokoyama, Hideya Kondo, Nobuhiro Kitamura, Takatoshi Hongyou | 1991-09-17 |
| 4855701 | Polarized electromagnet | Yoichi Yokoyama, Kideya Kondo, Youichi Kunimoto, Manabu Yano | 1989-08-08 |
| 4703294 | Remotely controllable relay | Yoichi Yokoyama, Masatoshi Yamamoto | 1987-10-27 |