Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6335711 | Head-mounted picture display device | Yoshihiro Maeda, Motohiro Atsumi | 2002-01-01 |
| 6327236 | Apparatus for recording and/or reproducing information and/or from optical information record disk | — | 2001-12-04 |
| 6310849 | Apparatus for recording and/or reproducing information and/or from optical information record disk | — | 2001-10-30 |
| 6288994 | Apparatus for recording and/or reproducing information and/or from optical information record disk | — | 2001-09-11 |
| 6278673 | Apparatus for recording and/or reproducing information and/or from optical information record disk | — | 2001-08-21 |
| 6205100 | Apparatus for recording and/or reproducing information and/or from optical information record disk | — | 2001-03-20 |
| 6185169 | Apparatus for recording and/or reproducing information and/or optical information record disk | — | 2001-02-06 |
| 6078550 | Apparatus for recording and/or reproducing information and/or from optical information record disk | — | 2000-06-20 |
| 5940357 | Apparatus for recording and/or reproducing information and/or from optical information record disk | — | 1999-08-17 |
| 5862110 | Apparatus for recording and/or reproducing information and/or from optical information record disk | — | 1999-01-19 |
| 5808997 | Disk drive apparatus capable of reliably receiving disk cartridges having both single and double sided disks | — | 1998-09-15 |
| 5610893 | Information recording and reproducing apparatus for copying information from exchangeable master recording medium to a plurality of other exchangeable recording media | Takumi Soga | 1997-03-11 |
| 5446711 | Apparatus for recording and/or reproducing information and/or from optical information record disk | — | 1995-08-29 |
| 5126983 | Apparatus for optically recording information on opto-magnetic record medium having a minimized leakage magnetic field | Tetsuo Ikegame, Ichiro Ikari | 1992-06-30 |
| 4769803 | Optical information recording and/or reproducing apparatus | — | 1988-09-06 |
| 4750163 | Pick-up head abnormality detector for optical recording/reproducing apparatus | Masaharu Sakamoto | 1988-06-07 |
| 4520280 | Apparatus for detecting input signal | Shozi Yoshikawa, Hiroshi Kodama, Ken Ohsima, Masaharu Sakamoto, Kiichi Kato | 1985-05-28 |
| 4505585 | System for detecting defects on an optical surface | Shoji Yoshikawa, Ken Ohshima, Hiroshi Kodama, Masaharu Sakamoto, Kiichi Kato | 1985-03-19 |
| 4499514 | Disc drive apparatus | Hiroshi Kodama, Ken Ohshima, Shoji Yoshikawa, Kiichi Kato, Masaharu Sakamoto | 1985-02-12 |
| 4499572 | Method for reading information or defect out of rotating disc | Shozi Yoshikawa, Masaharu Sakamoto, Hiroshi Kodama, Kiichi Kato, Ken Ohsima | 1985-02-12 |
| 4495407 | System for focusing an optical head onto a flat surface | Hiroshi Kodama, Masaharu Sakamoto, Ken Ohshima, Shoji Yoshikawa, Kiichi Kato | 1985-01-22 |
| 4464050 | Apparatus for detecting optically defects | Kiichi Kato, Masaharu Sakamoto, Shoji Yoshikawa, Hiroshi Kodama, Ken Ohsima | 1984-08-07 |