Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6031319 | Quartz crystal element using a thickness shear hexagonal quartz blank and method for manufacturing the same | Mitsuaki Koyama, Shigenori Watanabe, Tadashi Tamiya, Keisuke MIYASHITA, Chiaki Kato | 2000-02-29 |