Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 5815343 | Magnetic recording medium, process for producing the same and magnetic recording system | Akira Ishikawa, Yoshihiro Shiroishi, Yuzuru Hosoe, Yotsuo Yahisa, Tomoo Yamamoto +3 more | 1998-09-29 |
| 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 |
| 5123933 | Method of producing magnetic disk | Yasushi Ito, Masaaki Imamura, Yoshiki Kato | 1992-06-23 |
| 5028242 | Lapping member and lapping tape | Yasushi Ito, Masaaki Imamura, Yoshiki Kato | 1991-07-02 |
| 4842618 | Method of producing magnetic disk | Yasushi Ito, Masaaki Imamura, Yoshiki Kato | 1989-06-27 |
| 4762534 | Method of producing magnetic disk | Yasushi Ito, Masaaki Imamura, Yoshiki Kato | 1988-08-09 |