Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7283730 | Optical disc camcorder | Naoki Inoue, Masaru Tezuka | 2007-10-16 |
| 7054542 | Data recording and reproducing apparatus having a data transfer device selectively transferring data between multiple data recording and reproducing devices | Yasuo Iwasaki | 2006-05-30 |
| 7027710 | Data recording and reproducing apparatus | Yasuo Iwasaki | 2006-04-11 |
| 7010216 | Data recording and reproducing apparatus having a data transfer device selectively transferring data between multiple data recording and reproducing devices | Yasuo Iwasaki | 2006-03-07 |
| 6888998 | Data recording and reproducing apparatus having a data transferring device for selectively transferring data between multiple data recording and reproducing devices | Yasuo Iwasaki | 2005-05-03 |
| 6438076 | Information recording or information recording/reproducing device | Kenji Kasahara, Yoji Ishii, Naoki Inoue | 2002-08-20 |
| 5771216 | Photomagnetic recording device and photomagnetic reproducing device | Kaichi Tatsuzawa, Shosuke Tanaka | 1998-06-23 |
| 5640379 | Photomagnetic recording device and photomagnetic reproducing device | Kaichi Tatsuzawa, Shosuke Tanaka | 1997-06-17 |
| 5625616 | Deterioration estimating method for a light emitting device and a light emission driving apparatus using the method | Masaru Tezuka, Shinji Kaneko, Yoshizo Mihara | 1997-04-29 |
| 5410523 | Optical pickup driving apparatus | Kenji Kasahara, Hiroshi Hasegawa | 1995-04-25 |
| 5309419 | M-O disk recording apparatus with light amount control based on multiple test performed on a test region at multiple disk rotational velocities | — | 1994-05-03 |
| 4779256 | Apparatus for detecting deviations from a mutually perpendicular condition between a disc and a light beam | Akio Yamakawa | 1988-10-18 |