Issued Patents 1989
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888753 | Information recording medium capable of accurately detecting the recording and reproduction starting positions and an information recording-reproducing method and apparatus therefor | Masahiko Enari, Akio Aoki, Machiko Matsushita, Hiroshi Matsuoka | 1989-12-19 |
| 4872743 | Varifocal optical element | Takeshi Baba, Kazuhiko Matsuoka, Masayuki Usui, Atsushi Someya, Masayuki Suzuki | 1989-10-10 |
| 4870633 | Apparatus for reproducing information recorded on a recording medium | Machiko Matsushita, Akio Aoki | 1989-09-26 |
| 4865426 | Variable aberration imaging optical system | Kazuhiko Matsuoka, Masayuki Usui, Takeshi Baba, Atsushi Someya, Yukuo Nishimura | 1989-09-12 |
| 4848879 | Light modulating device | Yukuo Nishimura, Yuko Miyajima, Takeshi Baba, Kazuhiko Matsuoka, Masayuki Usui +1 more | 1989-07-18 |
| 4842396 | Light modulation element and light modulation apparatus | Kazuhiko Matsuoka | 1989-06-27 |
| 4831243 | Information memory apparatus for reading out information from a moving recording medium | Masahiko Enari, Hiroshi Matsuoka, Akio Aoki | 1989-05-16 |
| 4825059 | Apparatus for recording and reproducing information | Hitoshi Kurihara, Kenichi Suzuki | 1989-04-25 |
| 4800258 | Information recording-reproducing apparatus | Kenichi Suzuki | 1989-01-24 |
| 4800546 | Optical information record/regenerating apparatus with device for prohibiting movement of optical head | Satoshi Shikichi, Akio Aoki | 1989-01-24 |