Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6803153 | Optical storage medium, optical storage method; optical storage apparatus, optical reading method, optical reading apparatus, optical retrieving method and optical retrieving apparatus | Katsunori Kawano, Yasunari Nishikata | 2004-10-12 |
| 6702958 | Electroluminescent phosphor and electroluminescent element therewith | Toshifumi Takehara, Mitsuhiro Oikawa | 2004-03-09 |