Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7952985 | Recording medium, its manufacturing method, mother disc for recording medium, and its manufacturing method | Masatsugu Suwabe | 2011-05-31 |
| 7924694 | Write-once type optical recording medium and fabrication method thereof | Yuichi Sabi, Etsuro Ikeda | 2011-04-12 |