Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10374569 | Resonance device and manufacturing method therefor | Keiichi Umeda, Hiroshi Yamada, Masakazu Fukumitsu | 2019-08-06 |
| 10291202 | Vibration device and manufacturing method of the same | Hiroshi Yamada, Keiichi Umeda, Toshio Nishimura | 2019-05-14 |