Issued Patents All Time
Showing 26–50 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7791993 | Optical disc drive provided with envelope defect detection function | Takahiro Kurokawa | 2010-09-07 |
| 7616726 | Optical disk apparatus and PLL circuit | Hiroyuki Minemura | 2009-11-10 |
| 7483478 | Information read device and read signal processing circuit | Hiroyuki Minemura | 2009-01-27 |
| 7446685 | Read signal processing circuit, read signal processing method, and optical disc drive | Takahiro Kurokawa | 2008-11-04 |
| 7428115 | Magnetic hard disk drive with countermeasure against spike noise | Takeshi Nakagawa, Ikuya Tagawa | 2008-09-23 |
| 7399540 | Perpendicular magnetic recording media, magnetic recording apparatus | Masaaki Futamoto, Kazuetsu Yoshida, Yukio Honda, Yoshiyuki Hirayama | 2008-07-15 |
| 7316852 | Perpendicular magnetic recording media | Kiwamu Tanahashi, Noboru Shimizu, Yukio Honda, Yuzuru Hosoe | 2008-01-08 |
| 7289284 | Stray field detector, magnetic disk drive, and method of head escaping | Reiko Arai, Takehiko Hamaguchi, Hideaki Maeda, Liping Shen, Mikio Suzuki | 2007-10-30 |
| 7217467 | Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus | Reiko Arai, Kiwamu Tanahashi | 2007-05-15 |
| 7153596 | Perpendicular magnetic recording medium, manufacturing process of the same, and magnetic storage apparatus using the same | Kiwamu Tanahashi, Reiko Arai | 2006-12-26 |
| 7153546 | Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same | Kiwamu Tanahashi, Noboru Shimizu, Yukio Honda, Yuzuru Hosoe | 2006-12-26 |
| 7147941 | Perpendicular magnetic recording media, magnetic recording apparatus | Masaaki Futamoto, Kazuetsu Yoshida, Yukio Honda, Yoshiyuki Hirayama | 2006-12-12 |
| 7138195 | Perpendicular magnetic recording media and magnetic storage | Kiwamu Tanahashi, Yukio Honda, Masaaki Futamoto, Akira Ishikawa | 2006-11-21 |
| 7041393 | Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same | Kiwamu Tanahashi, Yoshio Takahashi, Yuzuru Hosoe | 2006-05-09 |
| 7026810 | Method for testing or recording servo signal on perpendicular magnetic recording media | Kiwamu Tanahashi, Yukio Honda, Masaaki Futamoto, Yoshiyuki Hirayama | 2006-04-11 |
| 6894488 | Method for testing or recording servo signal on perpendicular magnetic recording media | Kiwamu Tanahashi, Yukio Honda, Masaaki Futamoto, Yoshiyuki Hirayama | 2005-05-17 |
| 6884513 | Rare earth metal-based permanent magnet having corrosion-resistant film and method for producing the same | Fumiaki Kikui | 2005-04-26 |
| 6878217 | Rare earth metal-based permanent magnet having corrosion-resistant film and method for producing the same | Fumiaki Kikui | 2005-04-12 |
| 6858330 | Perpendicular magnetic recording media and magnetic storage apparatus using the same | Kiwamu Tanahashi, Yukio Honda | 2005-02-22 |
| 6808824 | Perpendicular magnetic recording media | Kiwamu Tanahashi, Noboru Shimizu, Yukio Honda, Yuzuru Hosoe | 2004-10-26 |
| 6759148 | Perpendicular magnetic recording media and magnetic storage apparatus using the same | Kiwamu Tanahashi, Yukio Honda, Masaaki Futamoto, Akira Ishikawa | 2004-07-06 |
| 6723457 | Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same | Kiwamu Tanahashi, Noboru Shimizu, Yukio Honda, Yuzuru Hosoe | 2004-04-20 |
| 6686070 | Perpendicular magnetic recording media, magnetic recording apparatus | Masaaki Futamoto, Kazuetsu Yoshida, Yukio Honda, Yoshiyuki Hirayama | 2004-02-03 |
| 6376089 | Process for producing rare earth metal-based permanent magnet having corrosion-resistant film | Takeshi Nishiuchi, Fumiaki Kikui | 2002-04-23 |
| 5689494 | Surface atom fabrication method and apparatus | Masakazu Ichikawa, Shigeyuki Hosoki, Fumihiko Uchida, Shigeo Kato, Yoshihisa Fujisaki +5 more | 1997-11-18 |