Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6338436 | Variable ticket and ticket printer | Chisato Hiyama, Kazuto Kitano, Koh Ezoe | 2002-01-15 |
| 5410142 | Optical card with printing visible below the optical recording | Kazuo Tsuboi | 1995-04-25 |