Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8058941 | Voltage control type temperature compensation piezoelectric oscillator | Masayuki Ishikawa, Atsushi Kiyohara, Takehiro Yamamoto, Norihito Matsukawa | 2011-11-15 |
| 7439819 | Piezoelectric-oscillator | Tsuyoshi Ohshima, Masayuki Ishikawa, Susumu Kurosawa, Yuki Fujimoto, Yasutaka Nakashiba | 2008-10-21 |