Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6805977 | Condensed eight-ring aromatic compound, and organic EL element and organic EL display using the same | Hiroyuki Sato, Azuma Matsuura, Toshiaki Narusawa | 2004-10-19 |
| 6803126 | Organic EL element and organic EL display | Hiroyuki Sato, Azuma Matsuura, Toshiaki Narusawa | 2004-10-12 |
| 6783872 | Dinaphtopyrene compound, and organic EL element and organic EL display using the same | Hiroyuki Sato, Azuma Matsuura, Toshiaki Narusawa | 2004-08-31 |
| 6773832 | Organic electroluminescent element and organic electroluminescence display using the same | Hiroyuki Sato, Azuma Matsuura | 2004-08-10 |
| 6693736 | Optical circuit system and components of same | Tetsuzo Yoshimura, Takeshi Ishitsuka, Katsusada Motoyoshi, Satoshi Tatsuura, Koji Tsukamoto +3 more | 2004-02-17 |