Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7705256 | Thin key sheet | — | 2010-04-27 |
| 7705259 | Thin key sheet and thin key unit incorporating the thin key sheet | — | 2010-04-27 |
| 6677545 | Illumination key and method of manufacture | — | 2004-01-13 |
| 6084190 | Illuminated keypad key and method of manufacture thereof | — | 2000-07-04 |
| 5945463 | Composition for a gasket and process for producing a gasket using the composition | Ichiro Kawabuchi, Tetsuro Yamada, Atsuo Ishikawa | 1999-08-31 |
| 5664667 | Pushbutton switch | — | 1997-09-09 |
| 5661279 | Pushbutton switch | — | 1997-08-26 |
| 5234744 | Illuminated button key | — | 1993-08-10 |
| 5128842 | Uniform illumination plate | — | 1992-07-07 |