Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7936295 | Digital/analog converter circuit | Yusuke Tokunaga, Shiro Sakiyama, Shiro Dosho, Yasuyuki Doi | 2011-05-03 |
| 7671775 | Digital-to-analog converter | Yasuyuki Doi, Makoto Hattori, Hideki Ikeda | 2010-03-02 |
| 7423572 | Digital-to-analog converter | Yasuyuki Doi | 2008-09-09 |