Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11769429 | Magnetic erasing device | — | 2023-09-26 |
| 11335487 | Magnetic eraser, writing system and display device | — | 2022-05-17 |
| 10997880 | Magnetic erasing device | — | 2021-05-04 |
| 10442236 | Magnetic pen | — | 2019-10-15 |
| 10046592 | Magnetic pen | — | 2018-08-14 |
| 6340237 | Lamp cartridge | Hideto Kubouchi | 2002-01-22 |
| 6129437 | Image display apparatus | Hideto Kubouchi | 2000-10-10 |
| 5803449 | Automatic manuscript sheet feeder | Kouichi Minami | 1998-09-08 |
| 4979813 | Opaque projector | Kuroudo Hara | 1990-12-25 |
| 4802014 | Portable transfer apparatus | — | 1989-01-31 |