Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5204189 | Heat-sensitive transferring recording medium | Seiji Ueyama | 1993-04-20 |
| 4840835 | Heat-sensitive transferring recording medium | Seiji Ueyama | 1989-06-20 |
| 4707395 | Heat-sensitive transferring recording medium | Seiji Ueyama | 1987-11-17 |