Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6707787 | Optical recording medium | Takeshi Yamasaki, Tomomi Yukumoto | 2004-03-16 |
| 6703100 | Disk-like recording medium and method for producing the same | Nobuyuki Arakawa, Ken Minemura, Yuji Akiyama | 2004-03-09 |