Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6627253 | Magnetic recording media for longitudinal recording, process for producing the same and magnetic memory apparatus | Hiroyuki Suzuki, Yoshihiro Shiroishi, Sadao Hishiyama, Tomoyuki Ohno, Yotsuo Yahisa +5 more | 2003-09-30 |
| 6335103 | Magnetic recording media for longitudinal recording | Hiroyuki Suzuki, Yoshihiro Shiroishi, Sadao Hishiyama, Tomoyuki Ohno, Yotsuo Yahisa +5 more | 2002-01-01 |
| 6303205 | Magnetic disk including protective layer having surface with protrusions, and substrate therefor | Hideaki Tanaka, Kenichi Gomi, Yoshihiko Miyake, Sigeru Sano, Youichi Inomata +2 more | 2001-10-16 |
| 6057021 | Magnetic recording media and magnetic recording system using the same | Akira Ishikawa, Yuzuru Hosoe, Yoshihiro Shiroishi, Masatoshi Takeshita, Yotsuo Yahisa +6 more | 2000-05-02 |
| 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, Youichi Inomata +2 more | 1999-07-27 |
| 5750230 | Magnetic recording media and magnetic recording system using the same | Akira Ishikawa, Yuzuru Hosoe, Yoshihiro Shiroishi, Masatoshi Takeshita, Yotsuo Yahisa +6 more | 1998-05-12 |
| 5665478 | Magnetic recording media for longitudinal recording | Hiroyuki Suzuki, Yoshihiro Shiroishi, Sadao Hishiyama, Tomoyuki Ohno, Yotsuo Yahisa +5 more | 1997-09-09 |
| 5656349 | Magnetic disk, method of manufacturing the same and magnetic disk apparatus including the magnetic disk | Kenichi Gomi, Hideaki Tanaka, Hiroyuki Sugimoto, Shoichi Sawahata, Yoshihiko Miyake +4 more | 1997-08-12 |
| RE35490 | Thin film magnetic head having magnetic layers of different thickness and manufacturing method therefor | Makoto Saito | 1997-04-08 |
| 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, Youichi Inomata +2 more | 1996-04-02 |
| 5500296 | Magnetic recording medium, process for producing magnetic recording medium, apparatus for producing magnetic recording medium, and magnetic recording apparatus | Youichi Inoue, Yoshihiro Sato, Shinichi Hirose, Hiroshi Tani, Katsuyuki Tanaka +2 more | 1996-03-19 |
| 5411630 | Magnetic disk manufacturing method | Norikazu Nagase, Yoshihiro Moriguchi, Youichi Inomata, Hiroshi Yashiki, Yoshiki Kato | 1995-05-02 |
| 5353182 | Magnetic disk unit having magnetic disks and a magnetic head with a head slider which is in contact with surfaces of the magnetic disk | Takao Nakamura, Nobuya Sekiyama, Yoshiki Kato, Noriaki Okamoto, Masami Masuda | 1994-10-04 |
| 5285343 | Magnetic disk with surface protective layer having convex portions and magnetic disk apparatus including such a magnetic disk | Hideaki Tanaka, Kenichi Gomi, Shoichi Sawahata, Maki Kondo, Norikazu Tsumita +6 more | 1994-02-08 |
| 5280401 | Magnetic recording medium, method for producing same and magnetic recording apparatus | Youichi Inomata, Yoshiki Kato | 1994-01-18 |
| 5272581 | Disk-type recording medium and storage apparatus | Shyuichi Kojima, Hiroyuki Suzuki, Akira Kato, Keigo Iechika, Mikio Takada | 1993-12-21 |
| 5202810 | Magnetic disk having an improved surface configuration | Takao Nakamura, Nobuya Sekiyama, Yoshiki Kato, Noriaki Okamoto, Masami Masuda | 1993-04-13 |
| 5158833 | Magnetic recording medium | Shinya Matsuoka, Takaaki Shirakura, Yoshihiro Shiraisi | 1992-10-27 |
| 5147732 | Longitudinal magnetic recording media and magnetic memory units | Yoshihiro Shiroishi, Takeo Yamashita, Sadao Hishiyama, Noriyuki Kumasaka, Yoshibumi Matsuda +4 more | 1992-09-15 |
| 5143794 | Magnetic recording media for longitudinal recording, process for producing the same and magnetic memory apparatus | Hiroyuki Suzuki, Yoshihiro Shiroishi, Sadao Hishiyama, Tomoyuki Ohno, Yotsuo Yahisa +5 more | 1992-09-01 |
| 4939614 | Magnetic disk medium with circumferentially textured surfaces and varied surface roughness and method of producing the same | Takaaki Shirakura, Shinya Matsuoka, Hiroshi Yashiki, Masanori Arayashiki | 1990-07-03 |
| 4939045 | Magnetic recording medium | Kazuetsu Yoshida, Yoshihiro Shiroishi, Makoto Saito, Norikazu Tsumita, Takeo Yamashita +8 more | 1990-07-03 |
| 4883711 | Magnetic recording medium | Yoshihiro Shiroishi, Sadao Hishiyama, Hiroyuki Suzuki, Tomoyuki Ohno, Yoshibumi Matsuda +4 more | 1989-11-28 |
| 4841402 | Thin film magnetic head and method of manufacture | Tadashi Imanaka, Masayuki Takagi, Eisei Togawa, Harunobu Saito, Sadanori Nagaike | 1989-06-20 |
| 4833020 | Magnetic recording medium | Yoshihiro Shiroishi, Sadao Hishiyama, Hiroyuki Suzuki, Tomoyuki Ohno, Yoshibumi Matsuda +4 more | 1989-05-23 |