Issued Patents All Time
Showing 201–225 of 227 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5953299 | Information recording method and apparatus | Harukazu Miyamoto, Yasushi Miyauchi | 1999-09-14 |
| 5953310 | Optical recording medium using land/groove recording | Harukazu Miyamoto, Hisataka Sugiyama | 1999-09-14 |
| 5936933 | Information recording medium and method and apparatus for recording and reproducing information using the same | Harukazu Miyamoto, Yoshio Suzuki, Motoyuki Suzuki, Hisataka Sugiyama, Tetsuya Fushimi +1 more | 1999-08-10 |
| 5930228 | Method and apparatus for recording and reproducing information using pseudo identification signal | Harukazu Miyamoto, Yoshio Suzuki, Motoyuki Suzuki, Hisataka Sugiyama, Tetsuya Fushimi +1 more | 1999-07-27 |
| 5898663 | Optical recording medium with address information prepit for the same track at opposite boundaries of the same track | Harukazu Miyamoto, Hirofumi Sukeda, Motoyasu Terao, Tetsuo Andou | 1999-04-27 |
| 5889748 | Object lens and optical head for reproducing data from optical disks in different thickness of substrate | Takeshi Shimano, Masayuki Inoue, Akira Arimoto, Hisao Fujita, Hideaki Koyanagi | 1999-03-30 |
| 5878021 | Information recording medium, information recording method and information recording apparatus | Yasushi Miyauchi, Motoyasu Terao, Akemi Hirotsune, Harukazu Miyamoto | 1999-03-02 |
| 5878008 | Optical recording/reproducing method and apparatus for controlling irradiation position of an optical spot | Harukazu Miyamoto, Hisataka Sugiyama | 1999-03-02 |
| 5805565 | Optical disk having wobbled information shared between tracks | Harukazu Miyamoto, Hisataka Sugiyama | 1998-09-08 |
| 5761172 | Method of optical reproduction using pulsed light | Hisataka Sugiyama, Tetsuya Fushimi, Harukazu Miyamoto | 1998-06-02 |
| 5703867 | Optical recording medium having a dummy area at leading and/or trailing positions of recording area | Yasushi Miyauchi, Motoyasu Terao, Akemi Hirotsune, Harukazu Miyamoto | 1997-12-30 |
| 5608710 | Phase changing recording medium with amorphous points each formed by a pair of high power and low recording pulses | Tetsuya Fushimi | 1997-03-04 |
| 5583840 | ROM type optical recording medium with a high reflectivity and an optical head operable on ROM, write-one and rewritable disk | Yoshio Sato, Nobuyoshi Tsuboi, Hisashi Andoh, Masaichi Nagai, Isao Ikuta +4 more | 1996-12-10 |
| 5572502 | Optical disk apparatus | Atsuko Naruse, Yoshihito Maeda, Yoshimi Kato, Isao Ikuta, Hisashi Andoh +4 more | 1996-11-05 |
| 5484686 | Optical recording media and information recording and reproducing units | Yoshihito Maeda, Isao Ikuta, Hisashi Andoh, Masaichi Nagai, Yoshimi Katoh +2 more | 1996-01-16 |
| 5475656 | Optical disk memory and information processing apparatus | Yoshio Sato, Nobuyoshi Tsuboi, Hisashi Andoh, Masaichi Nagai, Isao Ikuta +4 more | 1995-12-12 |
| 5377178 | Data recording/reproducing method and apparatus using a recording medium having clock marks recorded in a wobbled track for read/write synchronization | Takeshi Maeda, Takeshi Nakao, Kiyoshi Matsumoto, Atsushi Saito, Tetsuya Fushimi | 1994-12-27 |
| 5371730 | Optical memory and information processing apparatus | Yoshihito Maeda, Isao Ikuta, Masaichi Nagai, Yoshimi Katou, Hisashi Andoh +4 more | 1994-12-06 |
| 5317556 | Information processing apparatus and optical head incorporated therein | Nobuyoshi Tsuboi, Yoshio Sato, Hisashi Andoh, Masaichi Nagai, Isao Ikuta +4 more | 1994-05-31 |
| 5311494 | Optical disk apparatus and optical head | Tatsuya Sugita, Yoshio Sato, Nobuyoshi Tsuboi, Hisashi Andoh | 1994-05-10 |
| 5274612 | Information processor and disk memory used in the same | Yoshio Sato, Nobuyoshi Tsuboi, Hisashi Andoh, Masaichi Nagai, Isao Ikuta +4 more | 1993-12-28 |
| 5177717 | Optical memory medium and its information recording and erasing method and apparatus | Yoshio Sato, Atsumi Watanabe, Satoshi Shimada, Hiroshi Sasaki, Nobuyoshi Tsuboi +3 more | 1993-01-05 |
| 5110792 | Method and apparatus of optical modulation using superconductive oxide material | Takahiro Nakayama, Kunihiro Tamahashi, Moriaki Fuyama, Yoshio Sato, Nobuyoshi Tsuboi +1 more | 1992-05-05 |
| 5055731 | High-speed two-dimensional electrostatic actuator | Hideki Nihei, Nobuyoshi Tsuboi, Hiroshi Kimura, Shigeki Morinaga | 1991-10-08 |
| 4978187 | Optical element, optical disc and rotary encoder with the optical element | Yoshio Sato, Nobuyoshi Tsuboi, Hiroaki Koyanagi, Shinji Ohyama | 1990-12-18 |