Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8427922 | Optical pickup device and optical disc device | Katsutoshi Hibino, Kenji Nagatomi | 2013-04-23 |
| 8107330 | Information recording and reproducing apparatus | Yoshihisa Suzuki, Satoshi Sumi, Toshihide Hamaguchi, Kenji Nakao, Hideharu Toda +1 more | 2012-01-31 |
| 7869322 | Optical disc device and disc reproducing method | — | 2011-01-11 |
| 7792002 | Optical disc device | Morio Nakatani, Masahiro Nakata | 2010-09-07 |
| 7729217 | Optical disc device for recording and reproducing information on and from a write-once-type disc using laser light | Ken Hirose, Kenji Nakao, Satoshi Sumi, Koichi Kawakami | 2010-06-01 |
| 7724630 | Optical disc device and disc determining method | — | 2010-05-25 |
| 7564751 | Laser power adjustment method and optical recording and reproduction apparatus | Ken Hirose, Kenji Nakao | 2009-07-21 |
| 7548496 | Optical recording and reproducing apparatus | Kenji Nakao, Ken Hirose | 2009-06-16 |
| 7505384 | Optical recording and reproducing apparatus | Kenji Nakao, Ken Hirose | 2009-03-17 |
| 7428198 | Optical disc device | Kenji Nakao, Ken Hirose, Satoshi Sumi | 2008-09-23 |
| 7327651 | Optical disc device | Kenji Nakao, Ken Hirose, Satoshi Sumi | 2008-02-05 |
| 6621772 | Record medium and reproducing apparatus of the same for detecting an offset correction | Kenji Asano, Yoshiharu Uchihara, Satoshi Sumi, Kenji Nakao, Hiroshi Watanabe +8 more | 2003-09-16 |
| 6400653 | Information recording/reproducing apparatus to record/reproduce information on a recording medium recorded with an address mark | Kenji Torazawa, Kenji Asano, Satoshi Sumi, Yoshiharu Uchihara, Toshiaki Hioki | 2002-06-04 |
| 6324138 | Digital disk recording and reproduction apparatus | Yoshihiro Hori, Hisashi Matsuyama, Akiomi Kunisa, Nobuo Itoh, Seiichiro Takahashi +6 more | 2001-11-27 |
| 6198710 | Digital recording method, digital disk, digital disk recording device, and digital disk reproducing device | Yoshihiro Hori, Hisashi Matsuyama, Akiomi Kunisa, Nobuo Itoh, Seiichiro Takahashi +6 more | 2001-03-06 |
| 5724323 | Recording and reproducing apparatus for recording media | Takashi Tanifuji | 1998-03-03 |