Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6424615 | Optical disk having plurality of volumes, recording device and reproduction device for same | Yutaka Ishimura, Kenichiro Takeshita | 2002-07-23 |
| 6363040 | CD-R medium recording method | — | 2002-03-26 |