Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5955821 | Piezoelectric electro-acoustic transducer | Kazuaki Yamamoto, Hiroyuki Inami | 1999-09-21 |
| 5955824 | Reduced size electro-acoustic transducer with improved terminal | Kazuaki Yamamoto, Hiroyuki Inami | 1999-09-21 |
| 5625248 | Piezoelectric buzzer | Isao Okada, Osamu Segawa, Toshiaki Yamashita | 1997-04-29 |