Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11233499 | Quartz crystal unit and method of manufacturing the same | Isao Ikeda | 2022-01-25 |
| 11108377 | Quartz crystal resonator and quartz crystal resonator unit | Isao Ikeda | 2021-08-31 |
| 11108378 | Method of manufacturing quartz crystal resonator and quartz crystal resonator unit | Isao Ikeda | 2021-08-31 |
| 7594307 | Method for manufacturing piezoelectric resonator | Tetsuya Morimura, Yoshihiro Ikeda, Makoto Irie | 2009-09-29 |