Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8928588 | Touch-type key input apparatus | — | 2015-01-06 |
| 7800587 | Touch-type key input apparatus | — | 2010-09-21 |
| 7731349 | Printing machine | Kazuhiro Hatasa, Hiroshi Yamazaki, Shunichi Ihara | 2010-06-08 |
| 7088340 | Touch-type key input apparatus | — | 2006-08-08 |
| 6356258 | Keypad | Yoshiya Kato | 2002-03-12 |
| 6295052 | Screen display key input unit | Yoshiya Kato | 2001-09-25 |
| 5861821 | Keyboard-type input apparatus | Yoshiya Kato | 1999-01-19 |