Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6426689 | Electromagnetic relay | Masafumi Nakagawa, Osamu Matsui, Kazuhiro Nobutoki, Masanori Motoyama, Toyotaka Nishikawa | 2002-07-30 |
| 5696475 | Electromagnetic relay | Katsumi Yoshitani, Hiromi Nishimura, Shigeru Tajima, Norimasa Kaji, Yukiharu Tanaka +2 more | 1997-12-09 |