Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4817025 | Digital filter | Shin Asai, Daisuke Mochisuki | 1989-03-28 |
| 4812815 | Digital-to-analog converter system | Mitsuyoshi Nakaya | 1989-03-14 |
| 4334279 | Display device for electronic calculators or the like | Koji Maekawa | 1982-06-08 |
| 4249245 | Confirmation sound generation for indicating effective key input operation | Akira Nakanishi | 1981-02-03 |