Issued Patents All Time
Showing 1–25 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7221637 | Multi-level optical recording medium, multi-level recording method, and multi-level reproduction method | Syuji Tsukamoto, Takashi Horai | 2007-05-22 |
| 7167439 | Multilevel optical recording medium with calibration signals | Hiroshi Take, Narutoshi Fukuzawa, Shuji Tsukamoto, Takashi Horai, Motohiro Inoue | 2007-01-23 |
| 7102969 | Multi-level optical recording medium reproducing method and reproducing device | Syuji Tsukamoto, Narutoshi Fukuzawa, Takashi Horai, Hiroshi Take, Motohiro Inoue | 2006-09-05 |
| 7082088 | Optical recording medium and optical recording method by irradiation | Syuji Tsukamoto, Takashi Horai, Shirou Ootsuki | 2006-07-25 |
| 7022393 | Optical recording medium | Takashi Horai, Narutoshi Fukuzawa, Syuji Tsukamoto | 2006-04-04 |
| 6914875 | Optical recording medium and optical recording method | — | 2005-07-05 |
| 6858279 | Process for producing optical recording medium and optical recording medium | Kazuki Suzawa, Tomoki Ushida | 2005-02-22 |
| 6808778 | Optical recording medium | Hideki Sunohara | 2004-10-26 |
| 6754166 | Optical recording medium and optical recording method | Kazuki Suzawa | 2004-06-22 |
| 6699557 | Optical recording medium and optical recording method | Syuji Tsukamoto, Takashi Horai, Shirou Ootsuki | 2004-03-02 |
| 6592936 | Spin coating method and coating apparatus | — | 2003-07-15 |
| 6485888 | Fluorinated alcohol for manufacturing optical recording medium and optical recording medium using the same | Kazuki Suzawa, Tomoki Ushida | 2002-11-26 |
| 6383596 | Optical recording medium and process for producing the same | Megumi Yoshimura, Tsuyoshi Komaki | 2002-05-07 |
| 5616447 | Optical disc having printable label layer | — | 1997-04-01 |
| 5536548 | Optical recording disk | Yasukawa Koji, Toshiki Aoi | 1996-07-16 |
| 5419939 | Optical recording disk | Toshiki Aoi, Akio Ogawa, Hideki Dohi | 1995-05-30 |
| 5415914 | Optical recording disk | Kenji Uchiyama, Mamoru Usami, Atsuko Motai, Toshiki Aoi | 1995-05-16 |
| 5391462 | Otical record disk | Koji Yasukawa, Junji Tominaga, Atsuko Motai | 1995-02-21 |
| 5389417 | Optical recording medium | Junji Tominaga, Susumu Haratani, Tokuhiko Handa | 1995-02-14 |
| 5209027 | Polishing of the rear surface of a stamper for optical disk reproduction | Toshihiko Ishida, Tetuji Takamizawa | 1993-05-11 |
| 5208088 | Optical recording medium | Junji Tominaga, Akio Ogawa | 1993-05-04 |
| 4950535 | Magnetic recording medium | Masharu Nishimatsu, Toshiaki Ide | 1990-08-21 |
| 4946729 | Resin composition and magnetic recording medium employing the composition | Masaharu Nishimatsu, Shigeru Shimada, Toshiaki Ide, Yuichi Kubota | 1990-08-07 |
| 4837116 | Magnetic recording medium and recording/reproducing method therefor | Masaharu Nishimatsu, Suguru Takayama | 1989-06-06 |
| 4835032 | Magnetic recording medium and recording/reproducing method therefor | Masaharu Nishimatsu, Suguru Takayama | 1989-05-30 |