Issued Patents All Time
Showing 51–67 of 67 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5249175 | Optical information recording medium and information recording and reproducing method therefor | Kenichi Nishiuchi, Ken'ichi Nagata | 1993-09-28 |
| 5233599 | Optical disk with a recording layer composed of tellurium, antimony, and germanium | Eiji Ohno, Kenichi Nishiuchi, Noboru Yamada | 1993-08-03 |
| 5216657 | Method and apparatus for timing variable optical information recording | Kenichi Nishiuchi, Noboru Yamada, Kazutoyo Hirosawa, Tomio Yoshida, Shinji Kubota | 1993-06-01 |
| 5154957 | Optical information recording medium | Noboru Yamada, Kenichi Nishiuchi, Eiji Ohno, Kenichi Nagata | 1992-10-13 |
| 5150351 | Optical information recording apparatus for recording an input signal having variable width pulse duration and pulse spacing periods | Eiji Ohno, Kenichi Nishiuchi, Noboru Yamada, Kenzou Ishibashi, Kunio Kimura | 1992-09-22 |
| 5130971 | Optical disk and optical information recording method | Eiji Ohno, Kenichi Nishiuchi, Noboru Yamada | 1992-07-14 |
| 5109373 | Optical information recording method | Eiji Ohno, Kenichi Nishiuchi, Noboru Yamada, Kenzou Ishibashi, Kunio Kimura | 1992-04-28 |
| 5097464 | Optical recording medium and optical recording/reproducing apparatus | Kenichi Nishiuchi | 1992-03-17 |
| 4908835 | Information recording medium | Kenichi Nishiuchi, Noboru Yamada, Eiji Ohno | 1990-03-13 |
| 4624914 | Optical information recording medium of Te, O and Pd and method for making same | Kunio Kimura, Masatoshi Takao, Mutsuo Takenaga | 1986-11-25 |
| 4587209 | Optical information recording member comprising Au, TeO.sub.2 and Te | Eiji Ohno, Kunio Kimura, Noboru Yamada | 1986-05-06 |
| 4547875 | Optical recording and retrieving disc | Takeo Ohta, Tatsushi Nakamura | 1985-10-15 |
| 4433403 | Optical disc recording and retrieval system | Sueki Baba, Tomio Yoshida, Tadaoki Yamashita | 1984-02-21 |
| 4385303 | Optical recording and reproducing disc | Michiyoshi Nagashima, Shunji Harigae, Tomio Yoshida, Tadaoki Yamashita | 1983-05-24 |
| 4330883 | System and method of optical information storage in a recording disc | Takeo Ohta, Tatsushi Nakamura, Tadaoki Yamashita | 1982-05-18 |
| 4322839 | Method and apparatus for recording and reproducing information on and from an optical disk | Tadaoki Yamashita, Takeo Ohta, Tatsushi Nakamura, Mutsuo Takenaga | 1982-03-30 |
| 4278734 | Optical information recording material and method of recording and reproducing information using same material | Takeo Ohta, Tatsushi Nakamura, Tadaoki Yamashita | 1981-07-14 |