Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8213284 | Multi-layered rewritable optical disc recording apparatus and recording method | Tetsuji Kawashima, Yukio Shishido, Toru Ifuku, Hiroshi Naganuma, Kiyoshi Arai +1 more | 2012-07-03 |
| 7227831 | Recording medium, recording and reproduction apparatus, and recording and reproduction method | — | 2007-06-05 |