Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6797374 | Magnetic read/write system and magnetic recording medium | Hideki Sasaki, Hiroyuki Yamada | 2004-09-28 |
| 6699557 | Optical recording medium and optical recording method | Hiroyuki Arioka, Syuji Tsukamoto, Shirou Ootsuki | 2004-03-02 |