Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8000210 | Quarter-wave plate, and optical pickup device | Makiko Saito | 2011-08-16 |
| 7907499 | Optical element, optical element manufacturing method and optical pickup device | Masahiro Morikawa, Hiroshi Miyakoshi | 2011-03-15 |