Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6743320 | Method and apparatus of optical information recording medium, and optical information recording medium | Kazuhiro Hayashi, Eiji Ohno | 2004-06-01 |
| 6743527 | Optical disk, method for producing the same, and apparatus for producing the same | Kazuhiro Hayashi, Kazuo Inoue, Eiji Ohno | 2004-06-01 |