Issued Patents 2019
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10425057 | Quartz crystal blank and quartz crystal resonator unit | Hiroyuki Yamamoto, Hiroaki Kaida | 2019-09-24 |
| 10418964 | Quartz crystal blank and quartz crystal resonator unit | Hiroyuki Yamamoto, Hiroaki Kaida | 2019-09-17 |
| 10411673 | Quartz crystal blank and quartz crystal resonator unit | Hiroyuki Yamamoto, Hiroaki Kaida | 2019-09-10 |
| 10361675 | Quartz crystal blank and quartz crystal resonator unit | Hiroyuki Yamamoto, Hiroaki Kaida | 2019-07-23 |