Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6583534 | Piezoelectric transformer, piezoelectric transformer drive circuit, piezoelectric transformer drive method and cold cathode tube drive apparatus using piezoelectric transformer | Hiroshi Nakatsuka, Katsunori Moritoki, Toshiyuki Asahi, Osamu Kawasaki | 2003-06-24 |
| 6514427 | Piezoelectric ceramic composition and piezoelectric element containing the same | Masamitsu Nishida, Keiichi Takahashi, Junichi Kato | 2003-02-04 |
| 6509700 | Apparatus and method for driving a cathode discharge tube | Hiroshi Nakatsuka, Takeshi Yamaguchi, Katsu Takeda, Katsunori Moritoki | 2003-01-21 |