Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7097371 | Keytop | Yutaka Sanda | 2006-08-29 |
| 6657139 | Keyboard | — | 2003-12-02 |
| 6504121 | Keyboard switch having leg dislodgement preventing mechanism | — | 2003-01-07 |
| 6068416 | Keyboard switch | Kiyomi Kumamoto, Seiki Katakami | 2000-05-30 |
| 5912443 | Membrane type keyboard with improved multiple key arrangement | — | 1999-06-15 |
| 5799772 | Pantograph type keyboard switch | Yutaka Sanda, Seiki Katakami | 1998-09-01 |
| 5763841 | Membrane type keyboard with improved multiple key arrangement | — | 1998-06-09 |
| 5758763 | Pantograph type keyboard switch | Yutaka Sanda, Seiki Katakami | 1998-06-02 |