Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7808151 | Piezoelectric element detection method, oscillation device, and vibrating gyroscope | — | 2010-10-05 |
| 7436737 | Electric timepiece | Masami Fukuda, Kiyotaka Igarashi, Ryoji Iwakura, Shigeru Morokawa | 2008-10-14 |
| 6727769 | Crystal oscillator circuit using CMOSFETs | Katsuyoshi Aihara, Ryoji Iwakura, Takakazu Yano, Yukio Otaka | 2004-04-27 |
| 6273538 | Method of driving ink-jet head | Tadashi Mitsuhashi | 2001-08-14 |