Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7911931 | Optical information recording medium, and substrate and manufacturing method for the optical information recording medium | Tetsuya Kondo, Hirofumi Nagano | 2011-03-22 |
| 7889631 | Optical information recording medium, and substrate and manufacturing method for the optical information recording medium | Tetsuya Kondo, Hirofumi Nagano | 2011-02-15 |