Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6628530 | Shielded case, electronic device having shielded case, electronic apparatus using electronic device, and method for manufacturing shielded case | — | 2003-09-30 |
| 5031222 | Piezoelectric speaker | — | 1991-07-09 |
| 4969197 | Piezoelectric speaker | — | 1990-11-06 |
| 4449019 | Piezoelectric loudspeaker | Sasuga Kakehi, Nobuhiko Nakagawa, Hideo Adachi | 1984-05-15 |
| 4439640 | Piezoelectric loudspeaker | — | 1984-03-27 |
| 4278851 | Piezoelectric buzzer | — | 1981-07-14 |