Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819044 | Thin-film EL device and composite substrate | Yukihiko Shirakawa, Masatoshi Takizawa, Minoru Ookoba | 2004-11-16 |
| 6699557 | Optical recording medium and optical recording method | Hiroyuki Arioka, Syuji Tsukamoto, Takashi Horai | 2004-03-02 |