Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5267226 | Optical information recording and reproducing apparatus with switchable spot-functions | Hideki Hosoya | 1993-11-30 |
| 5247505 | Information recording method for reciprocally recording and verifying information | Satoshi Shikichi, Fumiaki Kawaguchi, Kenichi Suzuki, Masayuki Usui, Hiroshi Matsuoka +4 more | 1993-09-21 |
| 5119356 | Information recording and reproducing apparatus including detection of whether an information recording medium has been normally loaded into the apparatus | Masayuki Usui | 1992-06-02 |
| 5018123 | Optical information recording medium and method for recording information on said medium and reproducing information therefrom | Hideki Hosoya, Akio Aoki, Masahiko Enari, Masayuki Usui, Hiroshi Matsuoka +4 more | 1991-05-21 |
| 5010534 | Optical information recording-reproducing apparatus | Masahiko Enari, Satoshi Shikichi, Fumiaki Kawaguchi, Kenichi Suzuki, Masayuki Usui +4 more | 1991-04-23 |
| 4979807 | Biaspherical single lens for an optical information recording-reproducing apparatus | — | 1990-12-25 |
| 4973836 | Optical pickup device including a beam splitter having an inclined plane | — | 1990-11-27 |
| 4932763 | Aspherical single lens system for use with optical cards | — | 1990-06-12 |
| 4922351 | Optical information recording and reproducing apparatus | Kenichi Suzuki, Satoshi Shikichi, Fumiaki Kawaguchi, Masayuki Usui, Hiroshi Matsuoka +4 more | 1990-05-01 |
| 4912697 | Apparatus and method for preventing recording errors due to a reduction in the relative speed between an information carrying light beam and a recording medium | Masahiko Enari, Satoshi Shikichi, Fumiaki Kawaguchi, Kenichi Suzuki, Masayuki Usui +4 more | 1990-03-27 |
| 4872743 | Varifocal optical element | Takeshi Baba, Masayuki Usui, Kazuo Minoura, Atsushi Someya, Masayuki Suzuki | 1989-10-10 |
| 4865426 | Variable aberration imaging optical system | Masayuki Usui, Kazuo Minoura, Takeshi Baba, Atsushi Someya, Yukuo Nishimura | 1989-09-12 |
| 4848879 | Light modulating device | Yukuo Nishimura, Yuko Miyajima, Kazuo Minoura, Takeshi Baba, Masayuki Usui +1 more | 1989-07-18 |
| 4842396 | Light modulation element and light modulation apparatus | Kazuo Minoura | 1989-06-27 |
| 4787075 | Optical information recording medium and apparatus for recording/reproducing information using the same | Hiroshi Matsuoka, Akio Aoki, Hideki Hosoya, Masayuki Usui, Kazuo Minoura +4 more | 1988-11-22 |
| 4751394 | Apparatus for recording and/or reproducing information using a card-like recording medium | Kenichi Suzuki, Akio Aoki, Kazuo Minoura | 1988-06-14 |
| 4729641 | Functional optical element having a non-flat planar interface with variable-index medium | Kazuo Minoura, Masayuki Usui, Yukuo Nishimura, Takeshi Baba, Atsushi Someya +2 more | 1988-03-08 |
| 4670137 | Impurity detector | Yasuo Koseki, Katsuya Ebara, Sankichi Takahashi, Minoru Kuroiwa, Akira Yamada | 1987-06-02 |
| 4667209 | Image recording apparatus | Isao Hakamada | 1987-05-19 |
| 4641920 | Optical element having the function of changing the cross-sectional intensity distribution of a light beam | Masayuki Usui, Kazuo Minoura, Takesi Baba, Atsushi Someya | 1987-02-10 |
| 4585296 | Scanning optical system having a tilting correcting function | Kazuo Minoura | 1986-04-29 |
| 4523801 | Scanning optical system subjected to a moisture proof treatment | Takeshi Baba, Noriyuki Nose, Hideo Yoshikawa, Kazuo Minoura, Akinori Hasu +1 more | 1985-06-18 |
| 4517589 | Colored image reading apparatus | Takeshi Baba | 1985-05-14 |
| 4447112 | Scanning optical system having a tilting correcting function | Kazuo Minoura | 1984-05-08 |
| 4443055 | Scanning optical system having a tilting correcting function | Kazuo Minoura | 1984-04-17 |