Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8030827 | Crystal unit | Takahiko Iwasaki, Kouichi Hara | 2011-10-04 |
| 7939768 | Crystal unit | Kouichi Hara | 2011-05-10 |
| 7863802 | Quartz crystal element made of double-rotation Y-cut quartz crystal plate | Akio Chiba | 2011-01-04 |