Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7079457 | Method of reproducing information with equalization coefficient for the reproduced information | Hirofumi Sukeda | 2006-07-18 |
| 7046595 | Method of reproducing information with equalization coefficient for the reproduced information | Hirofumi Sukeda | 2006-05-16 |
| 6970400 | Information recording medium with magnetic marks, recording and reproducing apparatus therefor, and head positioning method using detected magnetic leakage fields from the magnetic marks | Tsuyoshi Onuma, Teruaki Takeuchi, Nobuyuki Inaba, Fumiyoshi Kirino | 2005-11-29 |
| 6944105 | Method of reproducing information with equalization for the reproduced information to reduce inter-symbol interference | Hirofumi Sukeda | 2005-09-13 |
| 6893746 | Magnetic recording medium with high thermal stability, method for producing the same, and magnetic recording apparatus | Fumiyoshi Kirino, Norio Ohta, Teruaki Takeuchi, Harumi Hieida, Masaki Sekine +5 more | 2005-05-17 |
| 6815098 | Magnetic recording medium, method for producing the same, and magnetic storage apparatus | Satoshi Matsunuma, Akira Yano, Tsuyoshi Onuma, Takanobu Takayama, Harumi Hieida | 2004-11-09 |
| 6730421 | Magnetic recording medium and its production method, and magnetic recorder | Fumiyoshi Kirino, Nobuyuki Inaba, Teruaki Takeuchi | 2004-05-04 |
| 6674594 | Read/write head and magnetic recording device | Teruaki Takeuchi, Nobuyuki Inaba | 2004-01-06 |
| 6602621 | Magnetic recording medium, method for producing the same, and magnetic storage apparatus | Satoshi Matsunuma, Akira Yano, Tsuyoshi Onuma, Takanobu Takayama, Harumi Hieida | 2003-08-05 |
| 6567348 | Method for recording mark length shorter than channel bit length on magneto-optical medium | Masafumi Yoshihiro, Manabu Tani | 2003-05-20 |
| 6552977 | Information reproducing apparatus enabling equalization processing with equalization coefficient for reproduced information | Hirofumi Sukeda | 2003-04-22 |
| 6480447 | Method of reproducing information using a selected equalization coefficient for each signal | Hirofumi Sukeda | 2002-11-12 |
| 6130797 | Magnetic recorder and magnetooptical recorder | Kyo Akagi, Yoshihiro Shiroishi, Reijiro Tsuchiya, Takehiko Hamaguchi, Masuo Umemoto +6 more | 2000-10-10 |
| 5886969 | High-density information recording/reproducing method | Takeshi Maeda, Hisataka Sugiyama, Hiroyuki Awano, Harukazu Miyamoto, Keikichi Andoo +5 more | 1999-03-23 |
| 5835469 | High-density information recording/reproducing method | Takeshi Maeda, Hisataka Sugiyama, Hiroyuki Awano, Harukazu Miyamoto, Keikichi Andoo +5 more | 1998-11-10 |
| 5808988 | Reproduction of optical information by one-beam optics with reduced crosstalk as recorded in multi-phases and multi-levels at staggered lattice points, and apparatus and recording medium therefor | Takeshi Maeda, Hisataka Sugiyama | 1998-09-15 |
| 5786952 | Magnetic digital storage method and system wherein magnetic transition points in adjacent recorded tracks are out of phase with each other | Masuo Umemoto, Yoshihiro Shiroishi, Reijiro Tsuchiya, Kyo Akagi, Takehiko Hamaguchi +2 more | 1998-07-28 |
| 5774444 | Split photo detector for detecting a central portion and a peripheral portion of a reflected light beam | Takeshi Shimano, Kimio Tatsuno, Takeshi Maeda, Hisataka Sugiyama | 1998-06-30 |
| 5491683 | Optical information recording/reproducing method | Takeshi Maeda, Hisataka Sugiyama, Hirofumi Sukeda | 1996-02-13 |