Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7259936 | Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device | Hiroki Yamamoto, Takashi Namekawa, Takashi Naito, Yasutaka Suzuki, Akira Kato +4 more | 2007-08-21 |
| 7035049 | Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device | Hiroki Yamamoto, Takashi Namekawa, Takashi Naito, Yasutaka Suzuki, Akira Kato +4 more | 2006-04-25 |
| 6801397 | Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device | Hiroki Yamamoto, Takashi Namekawa, Takashi Naito, Yasutaka Suzuki, Akira Kato +4 more | 2004-10-05 |
| 6577472 | Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture | Hiroki Yamamoto, Takashi Namekawa, Takashi Naito, Yasutaka Suzuki, Akira Kato +4 more | 2003-06-10 |
| 6303205 | Magnetic disk including protective layer having surface with protrusions, and substrate therefor | Hideaki Tanaka, Kenichi Gomi, Yoshihiko Miyake, Sigeru Sano, Hiroshi Yashiki +2 more | 2001-10-16 |
| 6096445 | Substrate for a magnetic recording medium, the magnetic recording medium, and a method of producing the same | Masatomo Terakado, Yotsuo Yahisa, Akira Ishikawa, Kiyoshi Akamatsu | 2000-08-01 |
| 5930073 | Magnetic disk including protective layer having surface with magnetic disk including protrusions, and magnetic disk apparatus including the magnetic disk | Hideaki Tanaka, Kenichi Gomi, Yoshihiko Miyake, Sigeru Sano, Hiroshi Yashiki +2 more | 1999-07-27 |
| 5773124 | Magnetic recording medium comprising a protective layer having specified electrical resistivity and density | Fuminori Ishikawa, Hideaki Tanaka, Toshinori Hirano, Hiroko Saito, Kenichi Gomi +2 more | 1998-06-30 |
| 5690838 | Magnetic recording medium and process for producing same | Yoshihiro Moriguchi, Hiroshi Yashiki, Yoshiki Kato, Kenichi Gomi, Hideaki Tanaka | 1997-11-25 |
| 5656349 | Magnetic disk, method of manufacturing the same and magnetic disk apparatus including the magnetic disk | Kenichi Gomi, Hideaki Tanaka, Hiroyuki Sugimoto, Shoichi Sawahata, Masaki Ohura +4 more | 1997-08-12 |
| 5504646 | Magnetic disk including protective layer having surface with protusions and magnetic disk apparatus including the magnetic disk | Hideaki Tanaka, Kenichi Gomi, Yoshihiko Miyake, Sigeru Sano, Hiroshi Yashiki +2 more | 1996-04-02 |
| 5411630 | Magnetic disk manufacturing method | Norikazu Nagase, Yoshihiro Moriguchi, Hiroshi Yashiki, Masaki Ohura, Yoshiki Kato | 1995-05-02 |
| 5280401 | Magnetic recording medium, method for producing same and magnetic recording apparatus | Yoshiki Kato, Masaki Ohura | 1994-01-18 |