Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7590031 | Optical recording medium having BCA of write-once information | Motoyoshi Murakami | 2009-09-15 |
| 7414924 | Magneto-optical recording medium having watermark for preventing unauthorized copy | Mitsuaki Oshima, Shinichi Konishi, Shin-ichi Tanaka, Kenji Koishi, Mitsurou Moriya +3 more | 2008-08-19 |
| 7251200 | Apparatus for reproducing information data from magneto-optical recording medium using linear polarized beam | Motoyoshi Murakami | 2007-07-31 |
| 7002883 | Disk-shaped storage medium and tracking method using the same | Tadashi Nakamura, Yasumori Hino | 2006-02-21 |
| 6975564 | Magneto-optical recording medium for use in domain wall displacement detection system, and method for producing the same | Kiyoshi Uchida, Yasumori Hino, Motoyoshi Murakami | 2005-12-13 |
| 6973015 | Optical disk, method for recording and reproducing additional information to and from optical disk, reproducing apparatus for optical disk, and recording and reproducing apparatus for optical disk | Motoyoshi Murakami, Mitsuaki Oshima | 2005-12-06 |
| 6887652 | High density optical disk, apparatus for reproducing optical disk and method for producing optical disk master | Yasumori Hino, Tadashi Nakamura | 2005-05-03 |
| 6836457 | Information reproducing method and information reproducing device | Tadashi Nakamura, Yasumori Hino | 2004-12-28 |
| 6767697 | Magneto-optical disk and method for producing same by initializing with a laser having a predetermined wavelength | Kiyoshi Uchida, Yasumori Hino, Motoyoshi Murakami | 2004-07-27 |
| 6628578 | Disklike storage medium and tracking method using the same | Tadashi Nakamura, Yasumori Hino | 2003-09-30 |
| 6587407 | Information reproducing method and information reproducing device | Tadashi Nakamura, Yasumori Hino | 2003-07-01 |
| 6584046 | Method for reproducing information data from magneto-optical recording medium using linear polarized beam | Mitsuaki Oshima, Shinichi Konishi, Shin-ichi Tanaka, Kenji Koishi, Mitsurou Moriya +3 more | 2003-06-24 |
| 6307819 | Method of reading magneto-optical recording medium | Masahiro Birukawa, Yasumori Hino | 2001-10-23 |
| 6269056 | Recording method for a magneto-optical recording medium for position adjustment of a magnetic head | Masahiro Birukawa, Yasumori Hino | 2001-07-31 |
| 6266299 | Magneto-optical disk having write-once identification marks and method for recording thereof | Mitsuaki Oshima, Shinichi Konishi, Shin-ichi Tanaka, Kenji Koishi, Mitsurou Moriya +3 more | 2001-07-24 |
| 6252845 | High density optical disk, apparatus for reproducing optical disk and method for producing optical disk master | Yasumori Hino, Tadashi Nakamura | 2001-06-26 |
| 6222797 | Position adjustment method of a magnetic head using magneto-optical recording medium, and optical recording medium | Masahiro Birukawa, Yasumori Hino | 2001-04-24 |
| 6188649 | Method for reading magnetic super resolution type magneto-optical recording medium | Masahiro Birukawa, Yasumori Hino | 2001-02-13 |
| 6178151 | Optical head having a reproducing optical system and filter formed by light passing therethrough | Yasumori Hino, Masahiro Birukawa, Tadashi Nakamura | 2001-01-23 |
| 6061316 | Multi-track recording/reproducing apparatus, recording/reproducing method, and information recording medium | Tadashi Nakamura | 2000-05-09 |
| 6018505 | Magneto-optical disc apparatus | Masahiro Birukawa, Kiyoshi Uchida | 2000-01-25 |
| 5986977 | Method for reading magnetic super resolution type magneto-optical recording medium | Masahiro Birukawa, Yasumori Hino | 1999-11-16 |
| 5821004 | Magneto-optical recording medium and recording and reading out process using the same | Yasumori Hino, Yoshihiko Kudoh, Masahiro Birukawa | 1998-10-13 |
| 5748592 | Disk drive apparatus and disk storage medium for high density recording | Yasumori Hino, Masahiro Birukawa, Tadashi Nakamura | 1998-05-05 |
| 5724338 | Rewritable disk-shaped optical recording medium | Masahiro Birukawa, Yuuichi Fukamachi, Yoshihiko Kudoh, Yasumori Hino | 1998-03-03 |