Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7369008 | MOS varactor and voltage-controlled oscillator using the same | Shigeo Masai, Takashi Otsuka, Hisato Takeuchi | 2008-05-06 |
| 7286023 | Crystal oscillation circuit with frequency regulation | — | 2007-10-23 |
| 7283006 | Voltage-controlled oscillator | — | 2007-10-16 |
| 7247918 | MOS capacitor type semiconductor device and crystal oscillation device using the same | — | 2007-07-24 |
| 7173316 | Semiconductor device | — | 2007-02-06 |
| 6292066 | Function generator, crystal oscillation device and method of adjusting crystal oscillation device | Shuji Shibuya, Hisato Takeuchi, Junichi Matsuura, Takaharu Saeki | 2001-09-18 |
| D280650 | Activity toy | — | 1985-09-17 |