Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6469423 | Rectangular at-cut quartz element, quartz resonator, quartz resonator unit and quartz oscillator, and method of producing quartz element | — | 2002-10-22 |
| 6063301 | Crystal display processing method and crystal wafer manufacturing method | Kazunori Kiwada, Kazushige Umetsu, Katsumi Suzuki | 2000-05-16 |