Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10616689 | Piezoelectric sounding component | Masakazu Yamauchi, Yuko Yokoi | 2020-04-07 |
| 10397707 | Piezoelectric sounding component | Yuko Yokoi, Masakazu Yamauchi, Junichi Murakami, Takaaki Kaji | 2019-08-27 |