Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6621772 | Record medium and reproducing apparatus of the same for detecting an offset correction | Kenji Asano, Noboru Mamiya, Yoshiharu Uchihara, Satoshi Sumi, Kenji Nakao +8 more | 2003-09-16 |
| 6538968 | Information recording/reproducing apparatus | Atsushi Yamaguchi, Satoshi Sumi, Kenji Tanase, Yoshihisa Suzuki | 2003-03-25 |
| 6438097 | Optical recording disc capable of preventing illegal copy | Seiji Kajiyama, Youichi Tsuchiya, Kouichi Tada | 2002-08-20 |
| 6400653 | Information recording/reproducing apparatus to record/reproduce information on a recording medium recorded with an address mark | Kenji Asano, Satoshi Sumi, Yoshiharu Uchihara, Noboru Mamiya, Toshiaki Hioki | 2002-06-04 |
| 6339571 | Storage medium recorded with recording/reproducing conditions depending upon recording densities and method of recording and reproducing therefor | Toshiaki Hioki | 2002-01-15 |
| 6324138 | Digital disk recording and reproduction apparatus | Yoshihiro Hori, Hisashi Matsuyama, Akiomi Kunisa, Nobuo Itoh, Seiichiro Takahashi +6 more | 2001-11-27 |
| 6262967 | Optical recording disc capable of preventing illegal copy | Seiji Kajiyama, Youichi Tsuchiya, Kouichi Tada | 2001-07-17 |
| 6243326 | Recording and reproduction device for a magneto-optic recording medium capable of recording information according to optical super-resolution | Satoshi Sumi, Yoshihisa Suzuki, Atsushi Yamaguchi, Kenji Tanase, Yoshiharu Uchihara +1 more | 2001-06-05 |
| 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 |
| 6108296 | Optical recording disc capable of preventing illegal copy | Seiji Kajiyama, Youichi Tsuchiya, Kouichi Tada | 2000-08-22 |
| 5997276 | Optical disc manufacturing apparatus | Takanari Kusafuka, Masahiro Higuchi | 1999-12-07 |
| 5999685 | Light guide plate and surface light source using the light guide plate | Youichiro Goto, Michiaki Sato, Yasuko Teragaki, Katsutoshi Hibino, Masahiro Higuchi +1 more | 1999-12-07 |
| 5914929 | Optical disk recording/playback device with means to recognize, read from and record to multiple types of optical disk types | Seizo Kato, Kenji Nakao, Shigeki Hori | 1999-06-22 |
| 5363364 | Audio data recording/reproducing apparatus having digital high-speed dubbing function | Yasuhiro Ishii, Tateo Toyama, Shin'ichiro Tomisawa, Nagatoshi Sugihara | 1994-11-08 |
| 4993011 | Optical recording apparatus with simultaneous erasing and recording | Satoshi Sumi, Seiji Murata, Shigekazu Minechika | 1991-02-12 |