Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9324524 | Electromagnetic relay | Kensuke Kawaguchi, Kazuchika Hiroki, Tomohiro Yamakita, Haruki Ayado, Tomomi Yoshiyama +1 more | 2016-04-26 |
| 8198964 | Sealed contact device | Keisuke Yano, Ryuichi Hashimoto | 2012-06-12 |
| 8138863 | Electromagnetic relay | Hiroyasu Tanaka, Ryuichi Hashimoto, Kazuchika Hiroki, Hideaki Tsuji | 2012-03-20 |
| 8138872 | Contact device | Kazuchika Hiroki | 2012-03-20 |