Issued Patents 2018
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10135420 | Quartz crystal blank and quartz crystal resonator unit | Hiroyuki Yamamoto, Ryuichi Kawai | 2018-11-20 |
| 9985604 | Quartz crystal blank and quartz crystal resonator unit | Hiroyuki Yamamoto, Ryuichi Kawai | 2018-05-29 |
| 9887559 | Power feeding device and power receiving device for contactless power transmission | — | 2018-02-06 |
| 9871385 | Power feeding device and power receiving device for contactless power transmission | — | 2018-01-16 |