Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1081597 | Solid state relay | Tadahiko Ogawa, Sho Ogawa, Shinya Tsuji | 2025-07-01 |
| D1081598 | Solid state relay | Tadahiko Ogawa, Sho Ogawa, Shinya Tsuji | 2025-07-01 |
| D1066266 | Solid state relay | Tadahiko Ogawa, Sho Ogawa, Shinya Tsuji | 2025-03-11 |
| 9324524 | Electromagnetic relay | Kensuke Kawaguchi, Kazuchika Hiroki, Ikuhiro Yoshihara, Tomohiro Yamakita, Tomomi Yoshiyama +1 more | 2016-04-26 |