Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7327026 | Vacuum diode-type electronic heat pump device and electronic equipment having the same | Yoshihiko Matsuo, Yoichi Tsuda | 2008-02-05 |
| 7211891 | Electronic heat pump device, laser component, optical pickup and electronic equipment | Yoshihiko Matsuo, Yoichi Tsuda | 2007-05-01 |