Issued Patents All Time
Showing 126–150 of 150 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5974011 | Light beam condensing apparatus and method of driving optical recording medium by applying the apparatus | — | 1999-10-26 |
| 5953309 | Optical disk having logical tracks and dummy sectors in each zone, and optical disk drive device for such an optical disk | Kyosuke Yoshimoto, Teruo Furukawa, Masafumi Ototake | 1999-09-14 |
| 5946285 | Optical disk having a continuous information track formed of alternating land and groove track revolutions and a method of tracking the optical disk | Masato Nagasawa, Hiroyuki Ohata, Masayoshi Shimamoto, Kouichi Komawaki, Kenji Gotoh +1 more | 1999-08-31 |
| 5936932 | Optical recording medium having ID part shifting from the center of groove tracks | Hiroyuki Ohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida | 1999-08-10 |
| 5933410 | Optical disc and optical disc driving apparatus | Hiroyuki Ohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida, Isao Satoh +3 more | 1999-08-03 |
| 5923640 | Optical disc with a rewritable area and a read-only area | Yoshinari Takemura, Shunji Ohara, Takashi Ishida, Isao Satoh, Masato Nagasawa +1 more | 1999-07-13 |
| 5867474 | Optical disk having a continuous information track formed of alterating land/groove revolutions and optical disk drive | Masato Nagasawa, Tsuyoshi Katayama, Kouichi Komawaki | 1999-02-02 |
| 5848050 | Optical disk having a continuous recording track formed of alternating land and groove revolutions | Masato Nagasawa, Tsuyoshi Katayama, Koiti Komawaki, Yoshinobu Ishida | 1998-12-08 |
| 5838658 | Optical disc | Hiroyuki Ohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida, Isao Satoh +3 more | 1998-11-17 |
| 5825728 | Optical disk and optical disk drive device | Kyosuke Yoshimoto, M. C. Rao, Hiroyuki Ohata, Teruo Furukawa, Junichi Kondo +1 more | 1998-10-20 |
| 5717683 | Optical disk and optical disk drive device | Kyosuke Yoshimoto, M. C. Rao, Hiroyuki Ohata, Teruo Furukawa, Junichi Kondo +1 more | 1998-02-10 |
| 5687032 | Optical device inclination angle adjuster | Nobuo Takeshita, Teruo Fujita, Morihiro Karaki, Mitsuru Irie, Kenjiro Kime +1 more | 1997-11-11 |
| 5644420 | Light beam condensing apparatus and method of driving optical recording medium by applying the apparatus | — | 1997-07-01 |
| 5592452 | Optical disk with logical tracks formed thereon and optical disk drive device | Kyosuke Yoshimoto, M. C. Rao, Hiroyuki Ohata, Teruo Furukawa, Jinichi Kondo +1 more | 1997-01-07 |
| 5532987 | Focus error detecting device | Teruo Fujita, Morihiro Karaki, Mitsuru Irie | 1996-07-02 |
| 5453962 | Focus error detecting device | Teruo Fujita, Morihiro Karaki, Mitsuru Irie | 1995-09-26 |
| 5442608 | Disk apparatus having a power consumption reducing mechanism | Yoshiaki Umeda, Teruo Furukawa, Masaharu Ogawa, Akira Mashimo, Tetsuro Araki +4 more | 1995-08-15 |
| 5438557 | Optical disk storage which provides pull-in of focus servo and pull-in of tracking servo | Osamu Ito, Kyosuke Yoshimoto, Yoshihiro Kiyose, Akira Mashimo, Hiroyuki Onda +2 more | 1995-08-01 |
| 5309415 | Information recording method for overwriting a magneto-optic recording medium with two intensities of light beams | Koichi Takeuchi, Osamu Ito, Kyosuke Yoshimoto, Kunimaro Tanaka, Isao Watanabe +6 more | 1994-05-03 |
| 5272684 | Information recording method and information recording apparatus for magneto-optic recording information medium | Koichi Takeuchi, Osamu Ito, Kyosuke Yoshimoto, Kunimaro Tanaka, Isao Watanabe +6 more | 1993-12-21 |
| 5264911 | Laser power measuring jig for optical disk unit | Masayoshi Shimamoto, Yoshihiro Kiyose, Keiji Nakatsu, Isao Watanabe, Masami Horita +4 more | 1993-11-23 |
| 5247509 | Disk storage which automatically adjusts to optimum recording/reproducing level | Kyosuke Yoshimoto, Yoshihiro Kiyose, Teruo Furukawa, Akira Mashimo, Hiroyuki Onda +2 more | 1993-09-21 |
| 5107483 | Frequency selective optical data record/regenerate apparatus | Yoshiki Nakajima, Kunimaro Tanaka, Kyosuke Yoshimoto, Motomu Yoshimura, Mitsuo Maeda +7 more | 1992-04-21 |
| 5007038 | Method and apparatus for producing an accurate error signal in an optical recording medium driver | Teruo Furukawa, Masayoshi Shimamoto, Kyosuke Yoshimoto | 1991-04-09 |
| 5003525 | Apparatus for reading a magneto-optical disk | Masayoshi Shimamoto, Teruo Furukawa | 1991-03-26 |