Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6522322 | Touch panel input device | Hiroshi Tanaka, Hidemasa Sakurada | 2003-02-18 |
| 6356259 | Touch-panel input device | Hiroshi Tanaka | 2002-03-12 |
| 6310614 | Touch-panel input device | Hiroshi Tanaka | 2001-10-30 |