Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7554894 | Data recording and readingout system | Takashi Kikukawa, Narutoshi Fukuzawa, Tatsuhiro Kobayashi, Hajime Utsunomiya | 2009-06-30 |
| 6898174 | Optical recording medium | Isamu Kuribayashi, Masanori Shibahara, Hajime Utsunomiya | 2005-05-24 |
| 6496462 | Optical recording method, optical recording apparatus, and optical recording medium | Isamu Kuribayashi, Hajime Utsunomiya, Masanori Shibahara | 2002-12-17 |
| 6028836 | Optical recording medium for use at short wavelengths and its recording method | Atsuko Kosuda, Shuji Tsukamoto, Masahiro Shinkai | 2000-02-22 |
| 5536548 | Optical recording disk | Yasukawa Koji, Hiroyuki Arioka | 1996-07-16 |
| 5448541 | Method of use for an optical recording disk with a dye-containing recording layer and a tracking guide groove | — | 1995-09-05 |
| 5441848 | Optical recording/reproducing method | Atsuko Motai, Akio Ogawa | 1995-08-15 |
| 5419939 | Optical recording disk | Hiroyuki Arioka, Akio Ogawa, Hideki Dohi | 1995-05-30 |
| 5415914 | Optical recording disk | Hiroyuki Arioka, Kenji Uchiyama, Mamoru Usami, Atsuko Motai | 1995-05-16 |
| 5313452 | Optical recording disk | Mamoru Usami | 1994-05-17 |
| 5213859 | Optical recording disk | Masahiro Shinkai | 1993-05-25 |
| 5161150 | Optical recording medium | Kenryo Namba, Masahiro Shinkai, Sinichi Tezuka, Tetsushi Inoue, Suguru Takayama | 1992-11-03 |
| 5137798 | A pit-forming optical recording media and process for producing the same | Peter J. Duggan, Paul F. Gordon, Stephen J. Abbott, Akihiko Kuroiwa, Tezumbumi Kamijo | 1992-08-11 |
| 4752820 | Optical recording medium having a liquid crystal layer | Akihiko Kuroiwa, Shigeru Asami, Kazuo Takahashi, Kenryo Namba | 1988-06-21 |
| 4739345 | Optical recording disk | Kenryo Namba, Shigeru Asami, Kazuo Takahashi, Noriko Takeda, Mamoru Usami +1 more | 1988-04-19 |
| 4735889 | Optical recording medium | Kenryo Namba, Shigeru Asami, Kazuo Takahashi, Akihiko Kuroiwa | 1988-04-05 |
| 4713314 | Optical recording medium | Kenryo Namba, Shigeru Asami, Kazuo Takahashi, Akihiko Kuroiwa | 1987-12-15 |
| 4530080 | Optical recording/reproducing system | Shiro Nakagawa | 1985-07-16 |
| 4222084 | Magnetic head | Shiro Nakagawa | 1980-09-09 |