Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6794822 | Field emission electron source, electron gun and cathode ray tube device using the same | Keisuke Koga, Toru Kawase, Masahide Yamauchi, Takashi Itoh | 2004-09-21 |
| 6791061 | Optical machining device | Kazushige Hirasawa, Dokei Nagayasu, Makoto Ryudo | 2004-09-14 |