Issued Patents All Time
Showing 1–25 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9966095 | Perpendicular magnetic recording media having an extremely low Hk layer | Shun Tonooka, Masayoshi Shimizu, Maki Maeda | 2018-05-08 |
| 9406328 | Soft magnetic underlayer having high temperature robustness for high areal density perpendicular recording media | Shun Tonooka, Masayoshi Shimizu, Hiroyuki Nakagawa | 2016-08-02 |
| 9058831 | Perpendicular magnetic recording medium with grain boundary controlling layers | Shun Tonooka, Hiroyuki Nakagawa, Ichiro Tamai | 2015-06-16 |
| 8795478 | Method for manufacturing perpendicular magnetic recording medium | Yoshinori Honda, Takayuki Ichihara, Hiroyuki Nakagawa | 2014-08-05 |
| 8705208 | Perpendicular magnetic recording medium (PMRM) and magnetic storage device using the same | Hiroyuki Nakagawa, Reiko Arai, Ichiro Tamai | 2014-04-22 |
| 8592060 | Perpendicular magnetic recording media having low medium noise and systems using the same | Ichiro Tamai, Yotsuo Yahisa, Akemi Hirotsune | 2013-11-26 |
| 8440332 | Perpendicular magnetic recording medium and magnetic storage device using the same | Ichiro Tamai | 2013-05-14 |
| 8390956 | Perpendicular magnetic recording medium having FCC seed layers | Shun Tonooka, Reiko Arai, Hiroyuki Nakagawa | 2013-03-05 |
| 8298688 | Magnetic recording medium using layers having higher- and lower-HK anisotropic magnetic fields | Hiroaki Nemoto, Hiroyuki Nakagawa | 2012-10-30 |
| 8252367 | Methods and apparatus to fabricate soft magnetic film with preferred uniaxial anisotropy for perpendicular recording | Gunn Choe, Yoshihiro Ikeda, Masayoshi Shimizu | 2012-08-28 |
| 8000060 | Perpendicular magnetic recording medium and system having a magnetic recording layer with a perpendicular recording layer, a magnetic coupling layer, and a writing assist layer | Zhengang Zhang, Ikuko Takekuma | 2011-08-16 |
| 7875371 | Perpendicular magnetic recording medium, manufacturing process of the same, and magnetic recording/reproducing apparatus using the same | Reiko Arai, Yoshinori Honda, Mineaki Kodama | 2011-01-25 |
| 7641774 | Manufacturing process for perpendicular magnetic recording medium | Yoshinori Honda, Takayuki Ichihara, Hiroyuki Nakagawa | 2010-01-05 |
| 7316852 | Perpendicular magnetic recording media | Atsushi Kikugawa, Noboru Shimizu, Yukio Honda, Yuzuru Hosoe | 2008-01-08 |
| 7217467 | Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus | Reiko Arai, Atsushi Kikugawa | 2007-05-15 |
| 7182974 | Magnetic recording medium and its manufacturing method and magnetic recording system using such a magnetic recording medium | Yoshio Takahashi, Yuzuru Hosoe, Ichiro Tamai | 2007-02-27 |
| 7153596 | Perpendicular magnetic recording medium, manufacturing process of the same, and magnetic storage apparatus using the same | Reiko Arai, Atsushi Kikugawa | 2006-12-26 |
| 7153546 | Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same | Atsushi Kikugawa, Noboru Shimizu, Yukio Honda, Yuzuru Hosoe | 2006-12-26 |
| 7138195 | Perpendicular magnetic recording media and magnetic storage | Atsushi Kikugawa, Yukio Honda, Masaaki Futamoto, Akira Ishikawa | 2006-11-21 |
| 7056604 | Magnetic recording media and magnetic recording system using the same | Tetsuya Kanbe, Akira Ishikawa, Ichiro Tamai, Yotsuo Yahisa, Yuzuru Hosoe +7 more | 2006-06-06 |
| 7050253 | Magnetic recording media and magnetic storage apparatus using the same | Tetsuya Kanbe, Ichiro Tamai, Yuzuru Hosoe, Yoshio Takahashi, Fumiyoshi Kirino +2 more | 2006-05-23 |
| 7041393 | Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same | Atsushi Kikugawa, Yoshio Takahashi, Yuzuru Hosoe | 2006-05-09 |
| 7026810 | Method for testing or recording servo signal on perpendicular magnetic recording media | Atsushi Kikugawa, Yukio Honda, Masaaki Futamoto, Yoshiyuki Hirayama | 2006-04-11 |
| 6924048 | Magnetic recording medium and a magnetic storage apparatus | Tetsuya Kanbe, Yuzuru Hosoe, Ichiro Tamai, Yoshio Takahashi, Satoshi Matsunuma +1 more | 2005-08-02 |
| 6894488 | Method for testing or recording servo signal on perpendicular magnetic recording media | Atsushi Kikugawa, Yukio Honda, Masaaki Futamoto, Yoshiyuki Hirayama | 2005-05-17 |