Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6812623 | Piezoelectric transformer | Hiroshi Nakatsuka, Takeshi Yamaguchi, Kojiro Okuyama, Katsunori Moritoki | 2004-11-02 |
| 6720705 | Method of driving a piezoelectric transformer and power source apparatus using the same | Hiroshi Nakatsuka, Takeshi Yamaguchi, Katsunori Moritoki, Kojiro Okuyama | 2004-04-13 |