Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10511389 | Piezoelectric module | Kaoru Kijima | 2019-12-17 |
| 10311853 | Piezoelectric sounding body | Kaoru Kijima | 2019-06-04 |
| 10277967 | Piezoelectric sounding body | Kaoru Kijima | 2019-04-30 |