Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11205315 | Magnetism detection device, coin recognition device, and method for detecting magnetism using magnetism detection device | Seiji Morikawa, Daiki Yokoie, Ryo Hasegawa, Hidekazu Tanaka | 2021-12-21 |
| 11054488 | Magnetic detection apparatus, coin recognition unit and magnetic detection method | Seiji Morikawa, Daiki Yokoie | 2021-07-06 |