Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4713638 | Polarized electromagnetic relay | Yuichi Kamo | 1987-12-15 |
| 4614927 | Polarized electromagnetic relay | Yuichi Kamo, Katsuto Kojima | 1986-09-30 |
| 4499442 | Transfer-type electromagnetic relay comprising a permanent magnet under a fixed contact stud | Yuichi Kamo, Kazutoshi Wakamatsu, Kunio Naito | 1985-02-12 |