Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5883741 | Optical head device and birefringent diffraction grating polarizer and polarizing hologram element used therein | Yuzo Ono | 1999-03-16 |
| 5659531 | Optical head device and birefringent diffraction grating polarizer and polarizing hologram element used therein | Yuzo Ono | 1997-08-19 |
| 5535055 | Optical head device and birefringent diffraction grating polarizer and polarizing hologram element used therein | Yuzo Ono | 1996-07-09 |