Issued Patents All Time
Showing 1–25 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8802247 | Perpendicular magnetic recording medium with high medium S/N | Hiroyuki Matsumoto, Mitsuhiro Shoda, Reiko Arai, Katsumi Mabuchi | 2014-08-12 |
| 7799447 | Perpendicular magnetic recording medium having grain boundary layer containing ferromagnetic element | Atsushi Nakamura, Yoshio Takahashi | 2010-09-21 |
| 7651795 | Perpendicular magnetic recording medium and manufacturing of the same | Ichiro Tamai, Ikuko Takekuma, Yoshiyuki Hirayama, Yoshinori Honda | 2010-01-26 |
| 7641989 | Perpendicular magnetic recording medium for high density recording and manufacturing of the same | Ikuko Takekuma, Reiko Arai, Yoko Ogawa, Yoshiyuki Hirayama, Tomio Iwasaki | 2010-01-05 |
| 7618722 | Perpendicular magnetic recording media and magnetic storage apparatus using the same | Yoshiyuki Hirayama, Ikuko Takekuma, Hiroyuki Nakagawa | 2009-11-17 |
| 7556871 | Magnetic recording medium containing first and second recording layers, each layer containing a columnar structure | Takayuki Ichihara, Atsushi Nakamura, Ichiro Tamai | 2009-07-07 |
| 7534507 | Perpendicular magnetic recording medium for high density magnetic recording and manufacturing of the same | Reiko Arai, Yoshiyuki Hirayama, Tomio Iwasaki, Yoko Ogawa, Ikuko Takekuma | 2009-05-19 |
| 7457064 | Perpendicular magnetic recording medium, method of evaluating magnetic properties of the same | Hiroaki Nemoto, Ikuko Takekuma | 2008-11-25 |
| 7368185 | Perpendicular magnetic recording media and magnetic storage apparatus using the same | Yoshiyuki Hirayama, Hiroyuki Nakagawa, Ikuko Takekuma | 2008-05-06 |
| 7316852 | Perpendicular magnetic recording media | Kiwamu Tanahashi, Atsushi Kikugawa, Noboru Shimizu, Yukio Honda | 2008-01-08 |
| 7182974 | Magnetic recording medium and its manufacturing method and magnetic recording system using such a magnetic recording medium | Yoshio Takahashi, Kiwamu Tanahashi, Ichiro Tamai | 2007-02-27 |
| 7157162 | Magnetic recording medium and magnetic recording and reproducing apparatus | Kazusuke Yamanaka, Tomoo Yamamoto, Nobuyuki Inaba, Yasutaro Uesaka, Masaaki Futamoto +3 more | 2007-01-02 |
| 7153546 | Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same | Kiwamu Tanahashi, Atsushi Kikugawa, Noboru Shimizu, Yukio Honda | 2006-12-26 |
| 7056604 | Magnetic recording media and magnetic recording system using the same | Tetsuya Kanbe, Akira Ishikawa, Ichiro Tamai, Yotsuo Yahisa, Kiwamu Tanahashi +7 more | 2006-06-06 |
| 7050253 | Magnetic recording media and magnetic storage apparatus using the same | Tetsuya Kanbe, Ichiro Tamai, Kiwamu Tanahashi, 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 | Kiwamu Tanahashi, Atsushi Kikugawa, Yoshio Takahashi | 2006-05-09 |
| 6924048 | Magnetic recording medium and a magnetic storage apparatus | Tetsuya Kanbe, Ichiro Tamai, Yoshio Takahashi, Kiwamu Tanahashi, Satoshi Matsunuma +1 more | 2005-08-02 |
| 6852432 | Magnetic recording media and magnetic disk apparatus | Mitsuhiro Shoda, Naoto Endo, Noriyoshi Goda, Akira Kato | 2005-02-08 |
| 6846577 | Magnetic recording medium possessing a fluctuation field of not less than 30 Oe | Kazusuke Yamanaka, Tomoo Yamamoto, Nobuyuki Inaba, Yasutaro Uesaka, Masaaki Futamoto +3 more | 2005-01-25 |
| 6815083 | Perpendicular magnetic recording medium and process of production thereof | Hiroaki Nemoto, Hiroyuki Nakagawa | 2004-11-09 |
| 6808824 | Perpendicular magnetic recording media | Kiwamu Tanahashi, Atsushi Kikugawa, Noboru Shimizu, Yukio Honda | 2004-10-26 |
| 6773826 | Perpendicular magnetic recording media and magnetic storage apparatus using the same | Hiroyuki Nakagawa, Hiroaki Nemoto | 2004-08-10 |
| 6723457 | Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same | Kiwamu Tanahashi, Atsushi Kikugawa, Noboru Shimizu, Yukio Honda | 2004-04-20 |
| 6709768 | Magnetic recording medium and its manufacturing method and magnetic recording system using such a magnetic recording medium | Yoshio Takahashi, Kiwamu Tanahashi, Ichiro Tamai | 2004-03-23 |
| 6703148 | Magnetic recording medium and magnetic disk apparatus using the same | Yoshibumi Matsuda, Yotsuo Yahisa, Koji Sakamoto, Akira Kato | 2004-03-09 |