Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6495308 | Optical recording method and optical recording medium | Hajime Utsunomiya, Hiroyasu Inoue, Tetsuro Mizushima | 2002-12-17 |
| 6430128 | Method for reading optical information medium and optical information medium | Tatsuya Kato, Hajime Utsunomiya, Takashi Kikukawa | 2002-08-06 |
| 6403193 | Optical recording medium | Hideki Hirata, Tatsuya Kato | 2002-06-11 |