Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6771576 | Optical reproduction apparatus | Tetsuya Okumura | 2004-08-03 |
| 6765860 | Optical disc and optical drive | Minoru Tobita, Toshiaki Hioki, Michio Matsuura | 2004-07-20 |
| 6751173 | Optical disk and optical disk apparatus | — | 2004-06-15 |
| 6741527 | Magneto-optical recording medium and magneto-optical recording and reproducing device capable of controlling reproduction power based on long recorded marks | Tetsuya Okumura | 2004-05-25 |
| 6674701 | Apparatus for readout of optical recording medium | Tetsuya Okumura | 2004-01-06 |