Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4330883 | System and method of optical information storage in a recording disc | Nobuo Akahira, Tatsushi Nakamura, Tadaoki Yamashita | 1982-05-18 |
| 4322839 | Method and apparatus for recording and reproducing information on and from an optical disk | Tadaoki Yamashita, Nobuo Akahira, Tatsushi Nakamura, Mutsuo Takenaga | 1982-03-30 |
| 4278734 | Optical information recording material and method of recording and reproducing information using same material | Nobuo Akahira, Tatsushi Nakamura, Tadaoki Yamashita | 1981-07-14 |